Revert "inspector: move injected script source to native"

This reverts commit 34686abe.

Reason for revert: Compile errors on several bots, e.g. https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Linux%20-%20debug%20builder/33299

Original change's description:
> inspector: move injected script source to native
> 
> - introduced ValueMirror interface, this interface contains methods to generate
>   different protocol entities,
> - introduced DebugPropertyIterator, this iterator iterates through object properties
>   in the following order: exotic indices, enumerable strings, all other properties,
> - removed all injected script infra, e.g. closure compiler,
> 
> R=​dgozman@chromium.org
> TBR=yangguo@chromium.org
> 
> Bug: chromium:595206
> Cq-Include-Trybots: luci.chromium.try:linux_chromium_headless_rel;luci.chromium.try:linux_chromium_rel_ng;master.tryserver.blink:linux_trusty_blink_rel
> Change-Id: I077c1879622aa0d9900d719b80d2ef5ba4221a22
> Reviewed-on: https://chromium-review.googlesource.com/c/1295550
> Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
> Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#57142}

TBR=dgozman@chromium.org,yangguo@chromium.org,kozyatinskiy@chromium.org

Change-Id: I6e4ccaf1d6b151fbc0ffe4f26daa584433321c77
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:595206
Cq-Include-Trybots: luci.chromium.try:linux_chromium_headless_rel;luci.chromium.try:linux_chromium_rel_ng;master.tryserver.blink:linux_trusty_blink_rel
Reviewed-on: https://chromium-review.googlesource.com/c/1307432Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57144}

BUILD.gn

@@ -1937,8 +1937,6 @@ v8_source_set("v8_base") {
     "src/debug/debug-frames.cc",
     "src/debug/debug-frames.h",
     "src/debug/debug-interface.h",
-    "src/debug/debug-property-iterator.cc",
-    "src/debug/debug-property-iterator.h",
     "src/debug/debug-scope-iterator.cc",
     "src/debug/debug-scope-iterator.h",
     "src/debug/debug-scopes.cc",

DEPS

@@ -245,6 +245,17 @@ hooks = [
                 '-s', 'v8/test/wasm-spec-tests/tests.tar.gz.sha1',
     ],
   },
+  {
+    'name': 'closure_compiler',
+    'pattern': '.',
+    'action': [ 'download_from_google_storage',
+                '--no_resume',
+                '--no_auth',
+                '-u',
+                '--bucket', 'chromium-v8-closure-compiler',
+                '-s', 'v8/src/inspector/build/closure-compiler.tar.gz.sha1',
+    ],
+  },
   {
     'name': 'sysroot_arm',
     'pattern': '.',

src/api.cc

@@ -9556,8 +9556,20 @@ Local<Function> debug::GetBuiltin(Isolate* v8_isolate, Builtin builtin) {
   i::HandleScope handle_scope(isolate);
   i::Builtins::Name builtin_id;
   switch (builtin) {
-    case kStringToLowerCase:
-      builtin_id = i::Builtins::kStringPrototypeToLocaleLowerCase;
+    case kObjectKeys:
+      builtin_id = i::Builtins::kObjectKeys;
+      break;
+    case kObjectGetPrototypeOf:
+      builtin_id = i::Builtins::kObjectGetPrototypeOf;
+      break;
+    case kObjectGetOwnPropertyDescriptor:
+      builtin_id = i::Builtins::kObjectGetOwnPropertyDescriptor;
+      break;
+    case kObjectGetOwnPropertyNames:
+      builtin_id = i::Builtins::kObjectGetOwnPropertyNames;
+      break;
+    case kObjectGetOwnPropertySymbols:
+      builtin_id = i::Builtins::kObjectGetOwnPropertySymbols;
       break;
     default:
       UNREACHABLE();
@@ -9565,11 +9577,10 @@ Local<Function> debug::GetBuiltin(Isolate* v8_isolate, Builtin builtin) {
 
   i::Handle<i::String> name = isolate->factory()->empty_string();
   i::NewFunctionArgs args = i::NewFunctionArgs::ForBuiltinWithoutPrototype(
-      name, builtin_id, i::LanguageMode::kStrict);
+      name, builtin_id, i::LanguageMode::kSloppy);
   i::Handle<i::JSFunction> fun = isolate->factory()->NewFunction(args);
 
-  fun->shared()->set_internal_formal_parameter_count(0);
-  fun->shared()->set_length(0);
+  fun->shared()->DontAdaptArguments();
   return Utils::ToLocal(handle_scope.CloseAndEscape(fun));
 }
 
@@ -9694,6 +9705,41 @@ void debug::SetReturnValue(v8::Isolate* v8_isolate,
   isolate->debug()->set_return_value(*Utils::OpenHandle(*value));
 }
 
+int debug::GetNativeAccessorDescriptor(v8::Local<v8::Context> context,
+                                       v8::Local<v8::Object> v8_object,
+                                       v8::Local<v8::Name> v8_name) {
+  i::Handle<i::JSReceiver> object = Utils::OpenHandle(*v8_object);
+  i::Handle<i::Name> name = Utils::OpenHandle(*v8_name);
+  uint32_t index;
+  if (name->AsArrayIndex(&index)) {
+    return static_cast<int>(debug::NativeAccessorType::None);
+  }
+  i::LookupIterator it = i::LookupIterator(object->GetIsolate(), object, name,
+                                           i::LookupIterator::OWN);
+  if (!it.IsFound()) return static_cast<int>(debug::NativeAccessorType::None);
+  if (it.state() != i::LookupIterator::ACCESSOR) {
+    return static_cast<int>(debug::NativeAccessorType::None);
+  }
+  i::Handle<i::Object> structure = it.GetAccessors();
+  if (!structure->IsAccessorInfo()) {
+    return static_cast<int>(debug::NativeAccessorType::None);
+  }
+  auto isolate = reinterpret_cast<i::Isolate*>(context->GetIsolate());
+  int result = 0;
+#define IS_BUILTIN_ACESSOR(_, name, ...)                    \
+  if (*structure == *isolate->factory()->name##_accessor()) \
+    result |= static_cast<int>(debug::NativeAccessorType::IsBuiltin);
+  ACCESSOR_INFO_LIST_GENERATOR(IS_BUILTIN_ACESSOR, /* not used */)
+#undef IS_BUILTIN_ACESSOR
+  i::Handle<i::AccessorInfo> accessor_info =
+      i::Handle<i::AccessorInfo>::cast(structure);
+  if (accessor_info->getter())
+    result |= static_cast<int>(debug::NativeAccessorType::HasGetter);
+  if (accessor_info->setter())
+    result |= static_cast<int>(debug::NativeAccessorType::HasSetter);
+  return result;
+}
+
 int64_t debug::GetNextRandomInt64(v8::Isolate* v8_isolate) {
   return reinterpret_cast<i::Isolate*>(v8_isolate)
       ->random_number_generator()

src/debug/debug-interface.h

@@ -193,7 +193,13 @@ void ResetBlackboxedStateCache(Isolate* isolate,
 
 int EstimatedValueSize(Isolate* isolate, v8::Local<v8::Value> value);
 
-enum Builtin { kStringToLowerCase };
+enum Builtin {
+  kObjectKeys,
+  kObjectGetPrototypeOf,
+  kObjectGetOwnPropertyDescriptor,
+  kObjectGetOwnPropertyNames,
+  kObjectGetOwnPropertySymbols,
+};
 
 Local<Function> GetBuiltin(Isolate* isolate, Builtin builtin);
 
@@ -468,9 +474,14 @@ void SetReturnValue(v8::Isolate* isolate, v8::Local<v8::Value> value);
 enum class NativeAccessorType {
   None = 0,
   HasGetter = 1 << 0,
-  HasSetter = 1 << 1
+  HasSetter = 1 << 1,
+  IsBuiltin = 1 << 2
 };
 
+int GetNativeAccessorDescriptor(v8::Local<v8::Context> context,
+                                v8::Local<v8::Object> object,
+                                v8::Local<v8::Name> name);
+
 int64_t GetNextRandomInt64(v8::Isolate* isolate);
 
 v8::MaybeLocal<v8::Value> EvaluateGlobal(v8::Isolate* isolate,
@@ -507,39 +518,6 @@ class WeakMap : public v8::Object {
  private:
   WeakMap();
 };
-
-struct PropertyDescriptor {
-  bool enumerable : 1;
-  bool has_enumerable : 1;
-  bool configurable : 1;
-  bool has_configurable : 1;
-  bool writable : 1;
-  bool has_writable : 1;
-  v8::Local<v8::Value> value;
-  v8::Local<v8::Value> get;
-  v8::Local<v8::Value> set;
-};
-
-class PropertyIterator {
- public:
-  static std::unique_ptr<PropertyIterator> Create(v8::Local<v8::Object> object);
-
-  virtual ~PropertyIterator() = default;
-
-  virtual bool Done() const = 0;
-  virtual void Advance() = 0;
-
-  virtual v8::Local<v8::Name> name() const = 0;
-
-  virtual bool is_native_accessor() = 0;
-  virtual bool has_native_getter() = 0;
-  virtual bool has_native_setter() = 0;
-  virtual Maybe<PropertyAttribute> attributes() = 0;
-  virtual Maybe<PropertyDescriptor> descriptor() = 0;
-
-  virtual bool is_own() = 0;
-  virtual bool is_array_index() = 0;
-};
 }  // namespace debug
 }  // namespace v8
 

src/debug/debug-property-iterator.cc

-// Copyright 2018 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "src/debug/debug-property-iterator.h"
-
-#include "src/api-inl.h"
-#include "src/base/flags.h"
-#include "src/keys.h"
-#include "src/objects/js-array-buffer-inl.h"
-#include "src/property-descriptor.h"
-#include "src/property-details.h"
-
-namespace v8 {
-
-std::unique_ptr<debug::PropertyIterator> debug::PropertyIterator::Create(
-    v8::Local<v8::Object> v8_object) {
-  internal::Isolate* isolate =
-      reinterpret_cast<internal::Isolate*>(v8_object->GetIsolate());
-  return std::unique_ptr<debug::PropertyIterator>(
-      new internal::DebugPropertyIterator(isolate,
-                                          Utils::OpenHandle(*v8_object)));
-}
-
-namespace internal {
-
-DebugPropertyIterator::DebugPropertyIterator(Isolate* isolate,
-                                             Handle<JSReceiver> receiver)
-    : isolate_(isolate),
-      prototype_iterator_(isolate, receiver, kStartAtReceiver,
-                          PrototypeIterator::END_AT_NULL) {
-  if (receiver->IsJSProxy()) {
-    is_own_ = false;
-    prototype_iterator_.AdvanceIgnoringProxies();
-  }
-  if (prototype_iterator_.IsAtEnd()) return;
-  FillKeysForCurrentPrototypeAndStage();
-  if (should_move_to_next_stage()) Advance();
-}
-
-bool DebugPropertyIterator::Done() const {
-  return prototype_iterator_.IsAtEnd();
-}
-
-void DebugPropertyIterator::Advance() {
-  ++current_key_index_;
-  calculated_native_accessor_flags_ = false;
-  while (should_move_to_next_stage()) {
-    switch (stage_) {
-      case Stage::kExoticIndices:
-        stage_ = Stage::kEnumerableStrings;
-        break;
-      case Stage::kEnumerableStrings:
-        stage_ = Stage::kAllProperties;
-        break;
-      case Stage::kAllProperties:
-        stage_ = kExoticIndices;
-        is_own_ = false;
-        prototype_iterator_.AdvanceIgnoringProxies();
-        break;
-    }
-    FillKeysForCurrentPrototypeAndStage();
-  }
-}
-
-bool DebugPropertyIterator::is_native_accessor() {
-  if (stage_ == kExoticIndices) return false;
-  CalculateNativeAccessorFlags();
-  return native_accessor_flags_;
-}
-
-bool DebugPropertyIterator::has_native_getter() {
-  if (stage_ == kExoticIndices) return false;
-  CalculateNativeAccessorFlags();
-  return native_accessor_flags_ &
-         static_cast<int>(debug::NativeAccessorType::HasGetter);
-}
-
-bool DebugPropertyIterator::has_native_setter() {
-  if (stage_ == kExoticIndices) return false;
-  CalculateNativeAccessorFlags();
-  return native_accessor_flags_ &
-         static_cast<int>(debug::NativeAccessorType::HasSetter);
-}
-
-Handle<Name> DebugPropertyIterator::raw_name() const {
-  DCHECK(!Done());
-  if (stage_ == kExoticIndices) {
-    return isolate_->factory()->Uint32ToString(current_key_index_);
-  } else {
-    return Handle<Name>::cast(
-        FixedArray::get(*keys_, current_key_index_, isolate_));
-  }
-}
-
-v8::Local<v8::Name> DebugPropertyIterator::name() const {
-  return Utils::ToLocal(raw_name());
-}
-
-v8::Maybe<v8::PropertyAttribute> DebugPropertyIterator::attributes() {
-  Handle<JSReceiver> receiver =
-      PrototypeIterator::GetCurrent<JSReceiver>(prototype_iterator_);
-  auto result = JSReceiver::GetPropertyAttributes(receiver, raw_name());
-  if (result.IsNothing()) return Nothing<v8::PropertyAttribute>();
-  DCHECK(result.FromJust() != ABSENT);
-  return Just(static_cast<v8::PropertyAttribute>(result.FromJust()));
-}
-
-v8::Maybe<v8::debug::PropertyDescriptor> DebugPropertyIterator::descriptor() {
-  Handle<JSReceiver> receiver =
-      PrototypeIterator::GetCurrent<JSReceiver>(prototype_iterator_);
-
-  PropertyDescriptor descriptor;
-  Maybe<bool> did_get_descriptor = JSReceiver::GetOwnPropertyDescriptor(
-      isolate_, receiver, raw_name(), &descriptor);
-  if (did_get_descriptor.IsNothing()) {
-    return Nothing<v8::debug::PropertyDescriptor>();
-  }
-  DCHECK(did_get_descriptor.FromJust());
-  return Just(v8::debug::PropertyDescriptor{
-      descriptor.enumerable(), descriptor.has_enumerable(),
-      descriptor.configurable(), descriptor.has_configurable(),
-      descriptor.writable(), descriptor.has_writable(),
-      descriptor.has_value() ? Utils::ToLocal(descriptor.value())
-                             : v8::Local<v8::Value>(),
-      descriptor.has_get() ? Utils::ToLocal(descriptor.get())
-                           : v8::Local<v8::Value>(),
-      descriptor.has_set() ? Utils::ToLocal(descriptor.set())
-                           : v8::Local<v8::Value>(),
-  });
-}
-
-bool DebugPropertyIterator::is_own() { return is_own_; }
-
-bool DebugPropertyIterator::is_array_index() {
-  if (stage_ == kExoticIndices) return true;
-  uint32_t index = 0;
-  return raw_name()->AsArrayIndex(&index);
-}
-
-void DebugPropertyIterator::FillKeysForCurrentPrototypeAndStage() {
-  current_key_index_ = 0;
-  exotic_length_ = 0;
-  keys_ = Handle<FixedArray>::null();
-  if (prototype_iterator_.IsAtEnd()) return;
-  Handle<JSReceiver> receiver =
-      PrototypeIterator::GetCurrent<JSReceiver>(prototype_iterator_);
-  bool has_exotic_indices = receiver->IsJSTypedArray();
-  if (stage_ == kExoticIndices) {
-    if (!has_exotic_indices) return;
-    exotic_length_ = static_cast<uint32_t>(
-        Handle<JSTypedArray>::cast(receiver)->length_value());
-    return;
-  }
-  bool skip_indices = has_exotic_indices;
-  PropertyFilter filter =
-      stage_ == kEnumerableStrings ? ENUMERABLE_STRINGS : ALL_PROPERTIES;
-  if (!KeyAccumulator::GetKeys(receiver, KeyCollectionMode::kOwnOnly, filter,
-                               GetKeysConversion::kConvertToString, false,
-                               skip_indices)
-           .ToHandle(&keys_)) {
-    keys_ = Handle<FixedArray>::null();
-  }
-}
-
-bool DebugPropertyIterator::should_move_to_next_stage() const {
-  if (prototype_iterator_.IsAtEnd()) return false;
-  if (stage_ == kExoticIndices) return current_key_index_ >= exotic_length_;
-  return keys_.is_null() ||
-         current_key_index_ >= static_cast<uint32_t>(keys_->length());
-}
-
-namespace {
-base::Flags<debug::NativeAccessorType, int> GetNativeAccessorDescriptorInternal(
-    Handle<JSReceiver> object, Handle<Name> name) {
-  uint32_t index;
-  if (name->AsArrayIndex(&index)) return debug::NativeAccessorType::None;
-  LookupIterator it =
-      LookupIterator(object->GetIsolate(), object, name, LookupIterator::OWN);
-  if (!it.IsFound()) return debug::NativeAccessorType::None;
-  if (it.state() != LookupIterator::ACCESSOR) {
-    return debug::NativeAccessorType::None;
-  }
-  Handle<Object> structure = it.GetAccessors();
-  if (!structure->IsAccessorInfo()) return debug::NativeAccessorType::None;
-  auto isolate = object->GetIsolate();
-  base::Flags<debug::NativeAccessorType, int> result;
-#define IS_BUILTIN_ACESSOR(_, name, ...)                    \
-  if (*structure == *isolate->factory()->name##_accessor()) \
-    return debug::NativeAccessorType::None;
-  ACCESSOR_INFO_LIST_GENERATOR(IS_BUILTIN_ACESSOR, /* not used */)
-#undef IS_BUILTIN_ACESSOR
-  Handle<AccessorInfo> accessor_info = Handle<AccessorInfo>::cast(structure);
-  if (accessor_info->getter()) {
-    result |= debug::NativeAccessorType::HasGetter;
-  }
-  if (accessor_info->setter()) {
-    result |= debug::NativeAccessorType::HasSetter;
-  }
-  return result;
-}
-}  // anonymous namespace
-
-void DebugPropertyIterator::CalculateNativeAccessorFlags() {
-  if (calculated_native_accessor_flags_) return;
-  Handle<JSReceiver> receiver =
-      PrototypeIterator::GetCurrent<JSReceiver>(prototype_iterator_);
-  native_accessor_flags_ =
-      GetNativeAccessorDescriptorInternal(receiver, raw_name());
-  calculated_native_accessor_flags_ = true;
-}
-}  // namespace internal
-}  // namespace v8

src/debug/debug-property-iterator.h

-// Copyright 2018 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef V8_DEBUG_DEBUG_PROPERTY_ITERATOR_H_
-#define V8_DEBUG_DEBUG_PROPERTY_ITERATOR_H_
-
-#include "src/debug/debug-interface.h"
-#include "src/handles.h"
-#include "src/isolate.h"
-#include "src/prototype.h"
-
-#include "include/v8.h"
-
-namespace v8 {
-namespace internal {
-
-class JSReceiver;
-
-class DebugPropertyIterator final : public debug::PropertyIterator {
- public:
-  DebugPropertyIterator(Isolate* isolate, Handle<JSReceiver> receiver);
-  ~DebugPropertyIterator() override = default;
-
-  bool Done() const override;
-  void Advance() override;
-
-  v8::Local<v8::Name> name() const override;
-  bool is_native_accessor() override;
-  bool has_native_getter() override;
-  bool has_native_setter() override;
-  v8::Maybe<v8::PropertyAttribute> attributes() override;
-  v8::Maybe<v8::debug::PropertyDescriptor> descriptor() override;
-
-  bool is_own() override;
-  bool is_array_index() override;
-
- private:
-  void FillKeysForCurrentPrototypeAndStage();
-  bool should_move_to_next_stage() const;
-  void CalculateNativeAccessorFlags();
-  Handle<Name> raw_name() const;
-
-  Isolate* isolate_;
-  PrototypeIterator prototype_iterator_;
-  enum Stage { kExoticIndices = 0, kEnumerableStrings = 1, kAllProperties = 2 };
-  Stage stage_ = kExoticIndices;
-
-  uint32_t current_key_index_ = 0;
-  Handle<FixedArray> keys_;
-  uint32_t exotic_length_ = 0;
-
-  bool calculated_native_accessor_flags_ = false;
-  int native_accessor_flags_ = 0;
-  bool is_own_ = true;
-
-  DISALLOW_COPY_AND_ASSIGN(DebugPropertyIterator);
-};
-}  // namespace internal
-}  // namespace v8
-
-#endif  // V8_DEBUG_DEBUG_PROPERTY_ITERATOR_H_

src/inspector/BUILD.gn

@@ -61,6 +61,22 @@ inspector_protocol_generate("protocol_generated_sources") {
   outputs = _protocol_generated
 }
 
+action("inspector_injected_script") {
+  visibility = [ ":*" ]  # Only targets in this file can depend on this.
+  script = "build/xxd.py"
+  inputs = [
+    "injected-script-source.js",
+  ]
+  outputs = [
+    "$target_gen_dir/injected-script-source.h",
+  ]
+  args = [
+    "InjectedScriptSource_js",
+    rebase_path("injected-script-source.js", root_build_dir),
+    rebase_path("$target_gen_dir/injected-script-source.h", root_build_dir),
+  ]
+}
+
 config("inspector_config") {
   visibility = [ ":*" ]  # Only targets in this file can depend on this.
   if (is_component_build) {
@@ -70,6 +86,7 @@ config("inspector_config") {
 
 v8_source_set("inspector") {
   deps = [
+    ":inspector_injected_script",
     ":protocol_generated_sources",
   ]
   configs = [ ":inspector_config" ]
@@ -84,6 +101,7 @@ v8_source_set("inspector") {
     "../../include/v8-inspector-protocol.h",
     "../../include/v8-inspector.h",
   ]
+  sources += get_target_outputs(":inspector_injected_script")
   sources += [
     "custom-preview.cc",
     "custom-preview.h",
@@ -113,12 +131,18 @@ v8_source_set("inspector") {
     "v8-debugger-script.h",
     "v8-debugger.cc",
     "v8-debugger.h",
+    "v8-function-call.cc",
+    "v8-function-call.h",
     "v8-heap-profiler-agent-impl.cc",
     "v8-heap-profiler-agent-impl.h",
+    "v8-injected-script-host.cc",
+    "v8-injected-script-host.h",
     "v8-inspector-impl.cc",
     "v8-inspector-impl.h",
     "v8-inspector-session-impl.cc",
     "v8-inspector-session-impl.h",
+    "v8-internal-value-type.cc",
+    "v8-internal-value-type.h",
     "v8-profiler-agent-impl.cc",
     "v8-profiler-agent-impl.h",
     "v8-regex.cc",
@@ -131,8 +155,6 @@ v8_source_set("inspector") {
     "v8-stack-trace-impl.h",
     "v8-value-utils.cc",
     "v8-value-utils.h",
-    "value-mirror.cc",
-    "value-mirror.h",
     "wasm-translation.cc",
     "wasm-translation.h",
   ]

src/inspector/PRESUBMIT.py

+#!/usr/bin/env python
+#
+# Copyright 2016 the V8 project authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""v8_inspect presubmit script
+
+See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
+for more details about the presubmit API built into gcl.
+"""
+
+compile_note = "Be sure to run your patch by the compile-scripts.py script prior to committing!"
+
+
+def _CompileScripts(input_api, output_api):
+  local_paths = [f.LocalPath() for f in input_api.AffectedFiles()]
+
+  compilation_related_files = [
+    "js_protocol.json"
+    "compile-scripts.js",
+    "injected-script-source.js",
+    "injected_script_externs.js",
+    "check_injected_script_source.js"
+  ]
+
+  for file in compilation_related_files:
+    if (any(file in path for path in local_paths)):
+      script_path = input_api.os_path.join(input_api.PresubmitLocalPath(),
+        "build", "compile-scripts.py")
+      proc = input_api.subprocess.Popen(
+        [input_api.python_executable, script_path],
+        stdout=input_api.subprocess.PIPE,
+        stderr=input_api.subprocess.STDOUT)
+      out, _ = proc.communicate()
+      if "ERROR" in out or "WARNING" in out or proc.returncode:
+        return [output_api.PresubmitError(out)]
+      if "NOTE" in out:
+        return [output_api.PresubmitPromptWarning(out + compile_note)]
+      return []
+  return []
+
+
+def CheckChangeOnUpload(input_api, output_api):
+  results = []
+  results.extend(_CompileScripts(input_api, output_api))
+  return results
+
+
+def CheckChangeOnCommit(input_api, output_api):
+  results = []
+  results.extend(_CompileScripts(input_api, output_api))
+  return results

src/inspector/build/check_injected_script_source.py

+#!/usr/bin/env python
+# Copyright (c) 2014 Google Inc. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Copied from blink:
+# WebKit/Source/devtools/scripts/check_injected_script_source.py
+#
+
+import re
+import sys
+import os
+
+
+def validate_injected_script(fileName):
+    f = open(fileName, "r")
+    lines = f.readlines()
+    f.close()
+
+    proto_functions = "|".join([
+        # Array.prototype.*
+        "concat", "every", "filter", "forEach", "indexOf", "join", "lastIndexOf", "map", "pop",
+        "push", "reduce", "reduceRight", "reverse", "shift", "slice", "some", "sort", "splice", "toLocaleString", "toString", "unshift",
+        # Function.prototype.*
+        "apply", "bind", "call", "isGenerator", "toSource",
+        # Object.prototype.*
+        "toString",
+    ])
+
+    global_functions = "|".join([
+        "eval", "uneval", "isFinite", "isNaN", "parseFloat", "parseInt", "decodeURI", "decodeURIComponent",
+        "encodeURI", "encodeURIComponent", "escape", "unescape", "Map", "Set"
+    ])
+
+    # Black list:
+    # - instanceof, since e.g. "obj instanceof Error" may throw if Error is overridden and is not a function
+    # - Object.prototype.toString()
+    # - Array.prototype.*
+    # - Function.prototype.*
+    # - Math.*
+    # - Global functions
+    black_list_call_regex = re.compile(r"\sinstanceof\s+\w*|\bMath\.\w+\(|(?<!InjectedScriptHost)\.(" + proto_functions + r")\(|[^\.]\b(" + global_functions + r")\(")
+
+    errors_found = False
+    for i, line in enumerate(lines):
+        if line.find("suppressBlacklist") != -1:
+            continue
+        for match in re.finditer(black_list_call_regex, line):
+            errors_found = True
+            print "ERROR: Black listed expression in %s at line %02d column %02d: %s" % (os.path.basename(fileName), i + 1, match.start(), match.group(0))
+
+    if not errors_found:
+        print "OK"
+
+
+def main(argv):
+    if len(argv) < 2:
+        print('ERROR: Usage: %s path/to/injected-script-source.js' % argv[0])
+        return 1
+
+    validate_injected_script(argv[1])
+
+if __name__ == '__main__':
+    sys.exit(main(sys.argv))

src/inspector/build/closure-compiler.tar.gz.sha1

+69937d3c239ca63e4c9045718886ddd096ffc054
\ No newline at end of file

src/inspector/build/compile-scripts.py

+#!/usr/bin/env python
+#
+# Copyright 2016 the V8 project authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import os
+import os.path as path
+import generate_protocol_externs
+import re
+import subprocess
+import sys
+
+if len(sys.argv) == 2 and sys.argv[1] == '--help':
+  print("Usage: %s" % path.basename(sys.argv[0]))
+  sys.exit(0)
+
+java_required_major = 1
+java_required_minor = 7
+
+v8_inspector_path = path.dirname(path.dirname(path.abspath(__file__)))
+
+protocol_externs_file = path.join(v8_inspector_path, 'protocol_externs.js')
+injected_script_source_name = path.join(v8_inspector_path,
+  'injected-script-source.js')
+injected_script_externs_file = path.join(v8_inspector_path,
+  'injected_script_externs.js')
+
+generate_protocol_externs.generate_protocol_externs(protocol_externs_file,
+  path.join(v8_inspector_path, 'js_protocol.json'))
+
+error_warning_regex = re.compile(r'WARNING|ERROR')
+
+closure_compiler_jar = path.join(v8_inspector_path, 'build',
+  'closure-compiler', 'closure-compiler.jar')
+
+common_closure_args = [
+  '--checks_only',
+  '--warning_level', 'VERBOSE'
+]
+
+# Error reporting and checking.
+errors_found = False
+
+def popen(arguments):
+  return subprocess.Popen(arguments, stdout=subprocess.PIPE,
+    stderr=subprocess.STDOUT)
+
+def error_excepthook(exctype, value, traceback):
+  print 'ERROR:'
+  sys.__excepthook__(exctype, value, traceback)
+sys.excepthook = error_excepthook
+
+def has_errors(output):
+  return re.search(error_warning_regex, output) != None
+
+# Find java. Based on
+# http://stackoverflow.com/questions/377017/test-if-executable-exists-in-python.
+def which(program):
+  def is_exe(fpath):
+    return path.isfile(fpath) and os.access(fpath, os.X_OK)
+
+  fpath, fname = path.split(program)
+  if fpath:
+    if is_exe(program):
+      return program
+  else:
+    for part in os.environ['PATH'].split(os.pathsep):
+      part = part.strip('"')
+      exe_file = path.join(part, program)
+      if is_exe(exe_file):
+        return exe_file
+  return None
+
+def find_java():
+  exec_command = None
+  has_server_jvm = True
+  java_path = which('java')
+  if not java_path:
+    java_path = which('java.exe')
+
+  if not java_path:
+    print 'NOTE: No Java executable found in $PATH.'
+    sys.exit(0)
+
+  is_ok = False
+  java_version_out, _ = popen([java_path, '-version']).communicate()
+  java_build_regex = re.compile(r'^\w+ version "(\d+)\.(\d+)')
+  # pylint: disable=E1103
+  match = re.search(java_build_regex, java_version_out)
+  if match:
+    major = int(match.group(1))
+    minor = int(match.group(2))
+    is_ok = major >= java_required_major and minor >= java_required_minor
+  if is_ok:
+    exec_command = [java_path, '-Xms1024m', '-server',
+      '-XX:+TieredCompilation']
+    check_server_proc = popen(exec_command + ['-version'])
+    check_server_proc.communicate()
+    if check_server_proc.returncode != 0:
+      # Not all Java installs have server JVMs.
+      exec_command = exec_command.remove('-server')
+      has_server_jvm = False
+
+  if not is_ok:
+    print 'NOTE: Java executable version %d.%d or above not found in $PATH.' % (java_required_major, java_required_minor)
+    sys.exit(0)
+  print 'Java executable: %s%s' % (java_path, '' if has_server_jvm else ' (no server JVM)')
+  return exec_command
+
+java_exec = find_java()
+
+spawned_compiler_command = java_exec + [
+  '-jar',
+  closure_compiler_jar
+] + common_closure_args
+
+print 'Compiling injected-script-source.js...'
+
+command = spawned_compiler_command + [
+  '--externs', injected_script_externs_file,
+  '--externs', protocol_externs_file,
+  '--js', injected_script_source_name
+]
+
+injected_script_compile_proc = popen(command)
+
+print 'Validating injected-script-source.js...'
+injectedscript_check_script_path = path.join(v8_inspector_path, 'build',
+  'check_injected_script_source.py')
+validate_injected_script_proc = popen([sys.executable,
+  injectedscript_check_script_path, injected_script_source_name])
+
+print
+
+(injected_script_compile_out, _) = injected_script_compile_proc.communicate()
+print 'injected-script-source.js compilation output:%s' % os.linesep
+print injected_script_compile_out
+errors_found |= has_errors(injected_script_compile_out)
+
+(validate_injected_script_out, _) = validate_injected_script_proc.communicate()
+print 'Validate injected-script-source.js output:%s' % os.linesep
+print validate_injected_script_out if validate_injected_script_out else '<empty>'
+errors_found |= has_errors(validate_injected_script_out)
+
+os.remove(protocol_externs_file)
+
+if errors_found:
+  print 'ERRORS DETECTED'
+  sys.exit(1)

src/inspector/build/xxd.py

+# Copyright 2016 the V8 project authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Represent a file as a C++ constant string.
+
+Usage:
+python xxd.py VAR SOURCE DEST
+"""
+
+
+import sys
+import rjsmin
+
+
+def main():
+    variable_name, input_filename, output_filename = sys.argv[1:]
+    with open(input_filename) as input_file:
+        input_text = input_file.read()
+    input_text = rjsmin.jsmin(input_text)
+    hex_values = ['0x{0:02x}'.format(ord(char)) for char in input_text]
+    const_declaration = 'const char %s[] = {\n%s\n};\n' % (
+        variable_name, ', '.join(hex_values))
+    with open(output_filename, 'w') as output_file:
+        output_file.write(const_declaration)
+
+if __name__ == '__main__':
+    sys.exit(main())

src/inspector/custom-preview.cc

@@ -113,7 +113,7 @@ bool substituteObjectTags(int sessionId, const String16& groupName,
     }
     std::unique_ptr<protocol::Runtime::RemoteObject> wrapper;
     protocol::Response response =
-        injectedScript->wrapObject(originValue, groupName, WrapMode::kNoPreview,
+        injectedScript->wrapObject(originValue, groupName, false, false,
                                    configValue, maxDepth - 1, &wrapper);
     if (!response.isSuccess() || !wrapper) {
       reportError(context, tryCatch, "cannot wrap value");
@@ -379,8 +379,13 @@ void generateCustomPreview(int sessionId, const String16& groupName,
         reportError(context, tryCatch, "cannot find context with specified id");
         return;
       }
-      (*preview)->setBodyGetterId(
-          injectedScript->bindObject(bodyFunction, groupName));
+      (*preview)->setBodyGetterId(String16::concat(
+          "{\"injectedScriptId\":",
+          String16::fromInteger(InspectedContext::contextId(context)),
+          ",\"id\":",
+          String16::fromInteger(
+              injectedScript->bindObject(bodyFunction, groupName)),
+          "}"));
     }
     return;
   }

src/inspector/injected-script.h

@@ -46,9 +46,9 @@
 namespace v8_inspector {
 
 class RemoteObjectId;
+class V8FunctionCall;
 class V8InspectorImpl;
 class V8InspectorSessionImpl;
-enum class WrapMode;
 
 using protocol::Maybe;
 using protocol::Response;
@@ -65,40 +65,38 @@ class EvaluateCallback {
 
 class InjectedScript final {
  public:
-  InjectedScript(InspectedContext*, int sessionId);
+  static std::unique_ptr<InjectedScript> create(InspectedContext*,
+                                                int sessionId);
   ~InjectedScript();
+  static InjectedScript* fromInjectedScriptHost(v8::Isolate* isolate,
+                                                v8::Local<v8::Object>);
 
   InspectedContext* context() const { return m_context; }
 
   Response getProperties(
       v8::Local<v8::Object>, const String16& groupName, bool ownProperties,
-      bool accessorPropertiesOnly, WrapMode wrapMode,
+      bool accessorPropertiesOnly, bool generatePreview,
       std::unique_ptr<protocol::Array<protocol::Runtime::PropertyDescriptor>>*
           result,
       Maybe<protocol::Runtime::ExceptionDetails>*);
-
-  Response getInternalProperties(
-      v8::Local<v8::Value>, const String16& groupName,
-      std::unique_ptr<
-          protocol::Array<protocol::Runtime::InternalPropertyDescriptor>>*
-          result);
-
   void releaseObject(const String16& objectId);
 
-  Response wrapObject(v8::Local<v8::Value>, const String16& groupName,
-                      WrapMode wrapMode,
-                      std::unique_ptr<protocol::Runtime::RemoteObject>* result);
-  Response wrapObject(v8::Local<v8::Value>, const String16& groupName,
-                      WrapMode wrapMode,
-                      v8::MaybeLocal<v8::Value> customPreviewConfig,
-                      int maxCustomPreviewDepth,
-                      std::unique_ptr<protocol::Runtime::RemoteObject>* result);
+  Response wrapObject(
+      v8::Local<v8::Value>, const String16& groupName, bool forceValueType,
+      bool generatePreview,
+      std::unique_ptr<protocol::Runtime::RemoteObject>* result) const;
+  Response wrapObject(
+      v8::Local<v8::Value>, const String16& groupName, bool forceValueType,
+      bool generatePreview, v8::MaybeLocal<v8::Value> customPreviewConfig,
+      int maxCustomPreviewDepth,
+      std::unique_ptr<protocol::Runtime::RemoteObject>* result) const;
   std::unique_ptr<protocol::Runtime::RemoteObject> wrapTable(
-      v8::Local<v8::Object> table, v8::MaybeLocal<v8::Array> columns);
+      v8::Local<v8::Value> table, v8::Local<v8::Value> columns) const;
 
   void addPromiseCallback(V8InspectorSessionImpl* session,
                           v8::MaybeLocal<v8::Value> value,
-                          const String16& objectGroup, WrapMode wrapMode,
+                          const String16& objectGroup, bool returnByValue,
+                          bool generatePreview,
                           std::unique_ptr<EvaluateCallback> callback);
 
   Response findObject(const RemoteObjectId&, v8::Local<v8::Value>*) const;
@@ -109,16 +107,18 @@ class InjectedScript final {
                                v8::Local<v8::Value>* result);
 
   Response createExceptionDetails(
-      const v8::TryCatch&, const String16& groupName, WrapMode wrapMode,
+      const v8::TryCatch&, const String16& groupName, bool generatePreview,
       Maybe<protocol::Runtime::ExceptionDetails>* result);
   Response wrapEvaluateResult(
       v8::MaybeLocal<v8::Value> maybeResultValue, const v8::TryCatch&,
-      const String16& objectGroup, WrapMode wrapMode,
+      const String16& objectGroup, bool returnByValue, bool generatePreview,
       std::unique_ptr<protocol::Runtime::RemoteObject>* result,
       Maybe<protocol::Runtime::ExceptionDetails>*);
   v8::Local<v8::Value> lastEvaluationResult() const;
   void setLastEvaluationResult(v8::Local<v8::Value> result);
 
+  int bindObject(v8::Local<v8::Value>, const String16& groupName);
+
   class Scope {
    public:
     Response initialize();
@@ -196,21 +196,23 @@ class InjectedScript final {
 
     DISALLOW_COPY_AND_ASSIGN(CallFrameScope);
   };
-  String16 bindObject(v8::Local<v8::Value>, const String16& groupName);
 
  private:
+  InjectedScript(InspectedContext*, v8::Local<v8::Object>, int sessionId);
+  v8::Local<v8::Value> v8Value() const;
+  Response wrapValue(v8::Local<v8::Value>, const String16& groupName,
+                     bool forceValueType, bool generatePreview,
+                     v8::Local<v8::Value>* result) const;
   v8::Local<v8::Object> commandLineAPI();
   void unbindObject(int id);
 
-  void bindRemoteObjectIfNeeded(v8::Local<v8::Value>, const String16& groupName,
-                                protocol::Runtime::RemoteObject* remoteObject);
-
   class ProtocolPromiseHandler;
   void discardEvaluateCallbacks();
   std::unique_ptr<EvaluateCallback> takeEvaluateCallback(
       EvaluateCallback* callback);
 
   InspectedContext* m_context;
+  v8::Global<v8::Value> m_value;
   int m_sessionId;
   v8::Global<v8::Value> m_lastEvaluationResult;
   v8::Global<v8::Object> m_commandLineAPI;

src/inspector/injected_script_externs.js

+// Copyright 2015 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+/** @interface */
+function InjectedScriptHostClass()
+{
+}
+
+/**
+ * @param {*} obj
+ */
+InjectedScriptHostClass.prototype.nullifyPrototype = function(obj) {}
+
+/**
+ * @param {*} obj
+ * @param {string} name
+ * @return {*}
+ */
+InjectedScriptHostClass.prototype.getProperty = function(obj, name) {}
+
+/**
+ * @param {*} obj
+ * @return {string}
+ */
+InjectedScriptHostClass.prototype.internalConstructorName = function(obj) {}
+
+/**
+ * @param {*} obj
+ * @param {function()|undefined} func
+ * @return {boolean}
+ */
+InjectedScriptHostClass.prototype.formatAccessorsAsProperties = function(obj, func) {}
+
+/**
+ * @param {*} obj
+ * @return {string}
+ */
+InjectedScriptHostClass.prototype.subtype = function(obj) {}
+
+/**
+ * @param {*} obj
+ * @return {boolean}
+ */
+InjectedScriptHostClass.prototype.isTypedArray = function(obj) {}
+
+/**
+ * @param {*} obj
+ * @return {!Array.<*>}
+ */
+InjectedScriptHostClass.prototype.getInternalProperties = function(obj) {}
+
+/**
+ * @param {!Object} object
+ * @param {string} propertyName
+ * @return {boolean}
+ */
+InjectedScriptHostClass.prototype.objectHasOwnProperty = function(object, propertyName) {}
+
+/**
+ * @param {*} value
+ * @param {string} groupName
+ * @return {number}
+ */
+InjectedScriptHostClass.prototype.bind = function(value, groupName) {}
+
+/**
+ * @param {!Object} object
+ * @return {!Object}
+ */
+InjectedScriptHostClass.prototype.proxyTargetValue = function(object) {}
+
+/**
+ * @param {!Object} obj
+ * @return {!Array<string>}
+ */
+InjectedScriptHostClass.prototype.keys = function(obj) {}
+
+/**
+ * @param {!Object} obj
+ * @return {Object}
+ */
+InjectedScriptHostClass.prototype.getPrototypeOf = function(obj) {}
+
+/**
+ * @param {!Object} obj
+ * @param {string} prop
+ * @return {Object}
+ */
+InjectedScriptHostClass.prototype.getOwnPropertyDescriptor = function(obj, prop) {}
+
+/**
+ * @param {!Object} obj
+ * @return {!Array<string>}
+ */
+InjectedScriptHostClass.prototype.getOwnPropertyNames = function(obj) {}
+
+/**
+ * @param {!Object} obj
+ * @return {!Array<symbol>}
+ */
+InjectedScriptHostClass.prototype.getOwnPropertySymbols = function(obj) {}
+
+/**
+ * @param {!Object} obj
+ * @param {string|symbol} name
+ * @return {{isBuiltin:boolean, hasGetter:boolean, hasSetter:boolean}|undefined}
+ */
+InjectedScriptHostClass.prototype.nativeAccessorDescriptor = function(obj, name) {}
+
+/**
+ * @param {!Object} arrayBuffer
+ * @return {Array<Object>|undefined}
+ */
+InjectedScriptHostClass.prototype.typedArrayProperties = function(arrayBuffer) {}
+
+/** @type {!InjectedScriptHostClass} */
+var InjectedScriptHost;
+/** @type {!Window} */
+var inspectedGlobalObject;
+/** @type {number} */
+var injectedScriptId;

src/inspector/inspected-context.cc

@@ -109,12 +109,14 @@ InjectedScript* InspectedContext::getInjectedScript(int sessionId) {
   return it == m_injectedScripts.end() ? nullptr : it->second.get();
 }
 
-InjectedScript* InspectedContext::createInjectedScript(int sessionId) {
+bool InspectedContext::createInjectedScript(int sessionId) {
   std::unique_ptr<InjectedScript> injectedScript =
-      v8::base::make_unique<InjectedScript>(this, sessionId);
+      InjectedScript::create(this, sessionId);
+  // InjectedScript::create can destroy |this|.
+  if (!injectedScript) return false;
   CHECK(m_injectedScripts.find(sessionId) == m_injectedScripts.end());
   m_injectedScripts[sessionId] = std::move(injectedScript);
-  return getInjectedScript(sessionId);
+  return true;
 }
 
 void InspectedContext::discardInjectedScript(int sessionId) {

src/inspector/inspected-context.h

@@ -40,7 +40,7 @@ class InspectedContext {
   V8InspectorImpl* inspector() const { return m_inspector; }
 
   InjectedScript* getInjectedScript(int sessionId);
-  InjectedScript* createInjectedScript(int sessionId);
+  bool createInjectedScript(int sessionId);
   void discardInjectedScript(int sessionId);
 
  private:

src/inspector/js_protocol.json

@@ -1890,9 +1890,7 @@
                                 "error",
                                 "proxy",
                                 "promise",
-                                "typedarray",
-                                "arraybuffer",
-                                "dataview"
+                                "typedarray"
                             ]
                         },
                         {

src/inspector/js_protocol.pdl

@@ -887,8 +887,6 @@ domain Runtime
         proxy
         promise
         typedarray
-        arraybuffer
-        dataview
       # Object class (constructor) name. Specified for `object` type values only.
       optional string className
       # Remote object value in case of primitive values or JSON values (if it was requested).

src/inspector/v8-console-message.cc

@@ -259,33 +259,19 @@ V8ConsoleMessage::wrapArguments(V8InspectorSessionImpl* session,
 
   std::unique_ptr<protocol::Array<protocol::Runtime::RemoteObject>> args =
       protocol::Array<protocol::Runtime::RemoteObject>::create();
-
-  v8::Local<v8::Value> value = m_arguments[0]->Get(isolate);
-  if (value->IsObject() && m_type == ConsoleAPIType::kTable &&
-      generatePreview) {
-    v8::MaybeLocal<v8::Array> columns;
-    if (m_arguments.size() > 1) {
-      v8::Local<v8::Value> secondArgument = m_arguments[1]->Get(isolate);
-      if (secondArgument->IsArray()) {
-        columns = v8::Local<v8::Array>::Cast(secondArgument);
-      } else if (secondArgument->IsString()) {
-        v8::TryCatch tryCatch(isolate);
-        v8::Local<v8::Array> array = v8::Array::New(isolate);
-        if (array->Set(context, 0, secondArgument).IsJust()) {
-          columns = array;
-        }
-      }
-    }
+  if (m_type == ConsoleAPIType::kTable && generatePreview) {
+    v8::Local<v8::Value> table = m_arguments[0]->Get(isolate);
+    v8::Local<v8::Value> columns = m_arguments.size() > 1
+                                       ? m_arguments[1]->Get(isolate)
+                                       : v8::Local<v8::Value>();
     std::unique_ptr<protocol::Runtime::RemoteObject> wrapped =
-        session->wrapTable(context, v8::Local<v8::Object>::Cast(value),
-                           columns);
+        session->wrapTable(context, table, columns);
     inspectedContext = inspector->getContext(contextGroupId, contextId);
     if (!inspectedContext) return nullptr;
-    if (wrapped) {
+    if (wrapped)
       args->addItem(std::move(wrapped));
-    } else {
+    else
       args = nullptr;
-    }
   } else {
     for (size_t i = 0; i < m_arguments.size(); ++i) {
       std::unique_ptr<protocol::Runtime::RemoteObject> wrapped =

src/inspector/v8-console.cc

@@ -600,8 +600,9 @@ static void inspectImpl(const v8::FunctionCallbackInfo<v8::Value>& info,
   InjectedScript* injectedScript = helper.injectedScript(sessionId);
   if (!injectedScript) return;
   std::unique_ptr<protocol::Runtime::RemoteObject> wrappedObject;
-  protocol::Response response = injectedScript->wrapObject(
-      value, "", WrapMode::kNoPreview, &wrappedObject);
+  protocol::Response response =
+      injectedScript->wrapObject(value, "", false /** forceValueType */,
+                                 false /** generatePreview */, &wrappedObject);
   if (!response.isSuccess()) return;
 
   std::unique_ptr<protocol::DictionaryValue> hints =

src/inspector/v8-debugger-agent-impl.cc

@@ -260,9 +260,8 @@ Response buildScopes(v8::Isolate* isolate, v8::debug::ScopeIterator* iterator,
 
   for (; !iterator->Done(); iterator->Advance()) {
     std::unique_ptr<RemoteObject> object;
-    Response result =
-        injectedScript->wrapObject(iterator->GetObject(), kBacktraceObjectGroup,
-                                   WrapMode::kNoPreview, &object);
+    Response result = injectedScript->wrapObject(
+        iterator->GetObject(), kBacktraceObjectGroup, false, false, &object);
     if (!result.isSuccess()) return result;
 
     auto scope = Scope::create()
@@ -1086,12 +1085,10 @@ Response V8DebuggerAgentImpl::evaluateOnCallFrame(
   // context or session.
   response = scope.initialize();
   if (!response.isSuccess()) return response;
-  WrapMode mode = generatePreview.fromMaybe(false) ? WrapMode::kWithPreview
-                                                   : WrapMode::kNoPreview;
-  if (returnByValue.fromMaybe(false)) mode = WrapMode::kForceValue;
   return scope.injectedScript()->wrapEvaluateResult(
-      maybeResultValue, scope.tryCatch(), objectGroup.fromMaybe(""), mode,
-      result, exceptionDetails);
+      maybeResultValue, scope.tryCatch(), objectGroup.fromMaybe(""),
+      returnByValue.fromMaybe(false), generatePreview.fromMaybe(false), result,
+      exceptionDetails);
 }
 
 Response V8DebuggerAgentImpl::setVariableValue(
@@ -1271,9 +1268,8 @@ Response V8DebuggerAgentImpl::currentCallFrames(
     if (injectedScript) {
       v8::Local<v8::Value> receiver;
       if (iterator->GetReceiver().ToLocal(&receiver)) {
-        res =
-            injectedScript->wrapObject(receiver, kBacktraceObjectGroup,
-                                       WrapMode::kNoPreview, &protocolReceiver);
+        res = injectedScript->wrapObject(receiver, kBacktraceObjectGroup, false,
+                                         false, &protocolReceiver);
         if (!res.isSuccess()) return res;
       }
     }
@@ -1324,7 +1320,7 @@ Response V8DebuggerAgentImpl::currentCallFrames(
     if (!returnValue.IsEmpty() && injectedScript) {
       std::unique_ptr<RemoteObject> value;
       res = injectedScript->wrapObject(returnValue, kBacktraceObjectGroup,
-                                       WrapMode::kNoPreview, &value);
+                                       false, false, &value);
       if (!res.isSuccess()) return res;
       frame->setReturnValue(std::move(value));
     }
@@ -1532,8 +1528,8 @@ void V8DebuggerAgentImpl::didPause(
               ? protocol::Debugger::Paused::ReasonEnum::PromiseRejection
               : protocol::Debugger::Paused::ReasonEnum::Exception;
       std::unique_ptr<protocol::Runtime::RemoteObject> obj;
-      injectedScript->wrapObject(exception, kBacktraceObjectGroup,
-                                 WrapMode::kNoPreview, &obj);
+      injectedScript->wrapObject(exception, kBacktraceObjectGroup, false, false,
+                                 &obj);
       std::unique_ptr<protocol::DictionaryValue> breakAuxData;
       if (obj) {
         breakAuxData = obj->toValue();

src/inspector/v8-debugger.h

@@ -30,9 +30,6 @@ class V8InspectorImpl;
 class V8StackTraceImpl;
 struct V8StackTraceId;
 
-enum class WrapMode { kForceValue, kNoPreview, kWithPreview };
-enum class V8InternalValueType { kNone, kEntry, kScope, kScopeList };
-
 using protocol::Response;
 using ScheduleStepIntoAsyncCallback =
     protocol::Debugger::Backend::ScheduleStepIntoAsyncCallback;
@@ -137,12 +134,6 @@ class V8Debugger : public v8::debug::DebugDelegate,
   std::shared_ptr<AsyncStackTrace> stackTraceFor(int contextGroupId,
                                                  const V8StackTraceId& id);
 
-  bool addInternalObject(v8::Local<v8::Context> context,
-                         v8::Local<v8::Object> object,
-                         V8InternalValueType type);
-  V8InternalValueType getInternalType(v8::Local<v8::Context> context,
-                                      v8::Local<v8::Object> object);
-
  private:
   void clearContinueToLocation();
   bool shouldContinueToCurrentLocation();
@@ -169,8 +160,6 @@ class V8Debugger : public v8::debug::DebugDelegate,
                                            v8::Local<v8::Function>);
   v8::MaybeLocal<v8::Value> generatorScopes(v8::Local<v8::Context>,
                                             v8::Local<v8::Value>);
-  v8::MaybeLocal<v8::Array> collectionsEntries(v8::Local<v8::Context> context,
-                                               v8::Local<v8::Value> value);
 
   void asyncTaskScheduledForStack(const String16& taskName, void* task,
                                   bool recurring);
@@ -264,8 +253,6 @@ class V8Debugger : public v8::debug::DebugDelegate,
   uint32_t m_lastStableObjectId = 0;
   v8::Global<v8::debug::WeakMap> m_stableObjectId;
 
-  v8::Global<v8::debug::WeakMap> m_internalObjects;
-
   WasmTranslation m_wasmTranslation;
 
   DISALLOW_COPY_AND_ASSIGN(V8Debugger);

src/inspector/v8-function-call.cc

+/*
+ * Copyright (C) 2009 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "src/inspector/v8-function-call.h"
+
+#include "src/inspector/inspected-context.h"
+#include "src/inspector/string-util.h"
+#include "src/inspector/v8-debugger.h"
+#include "src/inspector/v8-inspector-impl.h"
+
+#include "include/v8-inspector.h"
+
+namespace v8_inspector {
+
+V8FunctionCall::V8FunctionCall(V8InspectorImpl* inspector,
+                               v8::Local<v8::Context> context,
+                               v8::Local<v8::Value> value, const String16& name)
+    : m_inspector(inspector),
+      m_context(context),
+      m_name(toV8String(context->GetIsolate(), name)),
+      m_value(value) {}
+
+void V8FunctionCall::appendArgument(v8::Local<v8::Value> value) {
+  m_arguments.push_back(value);
+}
+
+void V8FunctionCall::appendArgument(const String16& argument) {
+  m_arguments.push_back(toV8String(m_context->GetIsolate(), argument));
+}
+
+void V8FunctionCall::appendArgument(int argument) {
+  m_arguments.push_back(v8::Number::New(m_context->GetIsolate(), argument));
+}
+
+void V8FunctionCall::appendArgument(bool argument) {
+  m_arguments.push_back(argument ? v8::True(m_context->GetIsolate())
+                                 : v8::False(m_context->GetIsolate()));
+}
+
+v8::Local<v8::Value> V8FunctionCall::call(bool& hadException,
+                                          bool reportExceptions) {
+  v8::TryCatch tryCatch(m_context->GetIsolate());
+  tryCatch.SetVerbose(reportExceptions);
+
+  v8::Local<v8::Value> result = callWithoutExceptionHandling();
+  hadException = tryCatch.HasCaught();
+  return result;
+}
+
+v8::Local<v8::Value> V8FunctionCall::callWithoutExceptionHandling() {
+  v8::Context::Scope contextScope(m_context);
+
+  v8::Local<v8::Object> thisObject = v8::Local<v8::Object>::Cast(m_value);
+  v8::Local<v8::Value> value;
+  if (!thisObject->Get(m_context, m_name).ToLocal(&value))
+    return v8::Local<v8::Value>();
+
+  DCHECK(value->IsFunction());
+
+  v8::Local<v8::Function> function = v8::Local<v8::Function>::Cast(value);
+  std::unique_ptr<v8::Local<v8::Value>[]> info(
+      new v8::Local<v8::Value>[m_arguments.size()]);
+  for (size_t i = 0; i < m_arguments.size(); ++i) {
+    info[i] = m_arguments[i];
+    DCHECK(!info[i].IsEmpty());
+  }
+
+  int contextGroupId = m_inspector->contextGroupId(m_context);
+  if (contextGroupId) {
+    m_inspector->client()->muteMetrics(contextGroupId);
+    m_inspector->muteExceptions(contextGroupId);
+  }
+  v8::MicrotasksScope microtasksScope(m_context->GetIsolate(),
+                                      v8::MicrotasksScope::kDoNotRunMicrotasks);
+  v8::Isolate::AllowJavascriptExecutionScope(m_context->GetIsolate());
+  v8::MaybeLocal<v8::Value> maybeResult = function->Call(
+      m_context, thisObject, static_cast<int>(m_arguments.size()), info.get());
+  if (contextGroupId) {
+    m_inspector->client()->unmuteMetrics(contextGroupId);
+    m_inspector->unmuteExceptions(contextGroupId);
+  }
+
+  v8::Local<v8::Value> result;
+  if (!maybeResult.ToLocal(&result)) return v8::Local<v8::Value>();
+  return result;
+}
+
+}  // namespace v8_inspector

src/inspector/v8-function-call.h

+/*
+ * Copyright (C) 2009 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef V8_INSPECTOR_V8_FUNCTION_CALL_H_
+#define V8_INSPECTOR_V8_FUNCTION_CALL_H_
+
+#include "src/inspector/string-16.h"
+
+#include "include/v8.h"
+
+namespace v8_inspector {
+
+class V8InspectorImpl;
+
+class V8FunctionCall {
+ public:
+  V8FunctionCall(V8InspectorImpl*, v8::Local<v8::Context>, v8::Local<v8::Value>,
+                 const String16& name);
+
+  void appendArgument(v8::Local<v8::Value>);
+  void appendArgument(const String16&);
+  void appendArgument(int);
+  void appendArgument(bool);
+
+  v8::Local<v8::Value> call(bool& hadException, bool reportExceptions = true);
+  v8::Local<v8::Value> callWithoutExceptionHandling();
+
+ protected:
+  V8InspectorImpl* m_inspector;
+  v8::Local<v8::Context> m_context;
+  std::vector<v8::Local<v8::Value>> m_arguments;
+  v8::Local<v8::String> m_name;
+  v8::Local<v8::Value> m_value;
+};
+
+}  // namespace v8_inspector
+
+#endif  // V8_INSPECTOR_V8_FUNCTION_CALL_H_

src/inspector/v8-injected-script-host.h

+// Copyright 2015 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef V8_INSPECTOR_V8_INJECTED_SCRIPT_HOST_H_
+#define V8_INSPECTOR_V8_INJECTED_SCRIPT_HOST_H_
+
+#include "include/v8.h"
+
+namespace v8_inspector {
+
+class V8InspectorImpl;
+
+// SECURITY NOTE: Although the InjectedScriptHost is intended for use solely by
+// the inspector,
+// a reference to the InjectedScriptHost may be leaked to the page being
+// inspected. Thus, the
+// InjectedScriptHost must never implemment methods that have more power over
+// the page than the
+// page already has itself (e.g. origin restriction bypasses).
+
+class V8InjectedScriptHost {
+ public:
+  // We expect that debugger outlives any JS context and thus
+  // V8InjectedScriptHost (owned by JS)
+  // is destroyed before inspector.
+  static v8::Local<v8::Object> create(v8::Local<v8::Context>, V8InspectorImpl*);
+
+ private:
+  static void nullifyPrototypeCallback(
+      const v8::FunctionCallbackInfo<v8::Value>&);
+  static void getPropertyCallback(const v8::FunctionCallbackInfo<v8::Value>&);
+  static void internalConstructorNameCallback(
+      const v8::FunctionCallbackInfo<v8::Value>&);
+  static void formatAccessorsAsProperties(
+      const v8::FunctionCallbackInfo<v8::Value>&);
+  static void subtypeCallback(const v8::FunctionCallbackInfo<v8::Value>&);
+  static void getInternalPropertiesCallback(
+      const v8::FunctionCallbackInfo<v8::Value>&);
+  static void objectHasOwnPropertyCallback(
+      const v8::FunctionCallbackInfo<v8::Value>&);
+  static void bindCallback(const v8::FunctionCallbackInfo<v8::Value>&);
+  static void proxyTargetValueCallback(
+      const v8::FunctionCallbackInfo<v8::Value>&);
+  static void nativeAccessorDescriptorCallback(
+      const v8::FunctionCallbackInfo<v8::Value>&);
+  static void typedArrayPropertiesCallback(
+      const v8::FunctionCallbackInfo<v8::Value>&);
+};
+
+}  // namespace v8_inspector
+
+#endif  // V8_INSPECTOR_V8_INJECTED_SCRIPT_HOST_H_

src/inspector/v8-inspector-session-impl.cc

@@ -203,7 +203,12 @@ Response V8InspectorSessionImpl::findInjectedScript(
   if (!context) return Response::Error("Cannot find context with specified id");
   injectedScript = context->getInjectedScript(m_sessionId);
   if (!injectedScript) {
-    injectedScript = context->createInjectedScript(m_sessionId);
+    if (!context->createInjectedScript(m_sessionId)) {
+      if (m_inspector->isolate()->IsExecutionTerminating())
+        return Response::Error("Execution was terminated");
+      return Response::Error("Cannot access specified execution context");
+    }
+    injectedScript = context->getInjectedScript(m_sessionId);
     if (m_customObjectFormatterEnabled)
       injectedScript->setCustomObjectFormatterEnabled(true);
   }
@@ -280,16 +285,14 @@ V8InspectorSessionImpl::wrapObject(v8::Local<v8::Context> context,
   findInjectedScript(InspectedContext::contextId(context), injectedScript);
   if (!injectedScript) return nullptr;
   std::unique_ptr<protocol::Runtime::RemoteObject> result;
-  injectedScript->wrapObject(
-      value, groupName,
-      generatePreview ? WrapMode::kWithPreview : WrapMode::kNoPreview, &result);
+  injectedScript->wrapObject(value, groupName, false, generatePreview, &result);
   return result;
 }
 
 std::unique_ptr<protocol::Runtime::RemoteObject>
 V8InspectorSessionImpl::wrapTable(v8::Local<v8::Context> context,
-                                  v8::Local<v8::Object> table,
-                                  v8::MaybeLocal<v8::Array> columns) {
+                                  v8::Local<v8::Value> table,
+                                  v8::Local<v8::Value> columns) {
   InjectedScript* injectedScript = nullptr;
   findInjectedScript(InspectedContext::contextId(context), injectedScript);
   if (!injectedScript) return nullptr;

src/inspector/v8-inspector-session-impl.h

@@ -55,8 +55,8 @@ class V8InspectorSessionImpl : public V8InspectorSession,
       v8::Local<v8::Context>, v8::Local<v8::Value>, const String16& groupName,
       bool generatePreview);
   std::unique_ptr<protocol::Runtime::RemoteObject> wrapTable(
-      v8::Local<v8::Context>, v8::Local<v8::Object> table,
-      v8::MaybeLocal<v8::Array> columns);
+      v8::Local<v8::Context>, v8::Local<v8::Value> table,
+      v8::Local<v8::Value> columns);
   std::vector<std::unique_ptr<protocol::Schema::Domain>> supportedDomainsImpl();
   Response unwrapObject(const String16& objectId, v8::Local<v8::Value>*,
                         v8::Local<v8::Context>*, String16* objectGroup);

src/inspector/v8-internal-value-type.cc

+// Copyright 2016 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "src/inspector/v8-internal-value-type.h"
+
+#include "src/inspector/string-util.h"
+
+namespace v8_inspector {
+
+namespace {
+
+v8::Local<v8::Private> internalSubtypePrivate(v8::Isolate* isolate) {
+  return v8::Private::ForApi(
+      isolate,
+      toV8StringInternalized(isolate, "V8InternalType#internalSubtype"));
+}
+
+v8::Local<v8::String> subtypeForInternalType(v8::Isolate* isolate,
+                                             V8InternalValueType type) {
+  switch (type) {
+    case V8InternalValueType::kEntry:
+      return toV8StringInternalized(isolate, "internal#entry");
+    case V8InternalValueType::kLocation:
+      return toV8StringInternalized(isolate, "internal#location");
+    case V8InternalValueType::kScope:
+      return toV8StringInternalized(isolate, "internal#scope");
+    case V8InternalValueType::kScopeList:
+      return toV8StringInternalized(isolate, "internal#scopeList");
+  }
+  UNREACHABLE();
+}
+
+}  // namespace
+
+bool markAsInternal(v8::Local<v8::Context> context,
+                    v8::Local<v8::Object> object, V8InternalValueType type) {
+  v8::Isolate* isolate = context->GetIsolate();
+  v8::Local<v8::Private> privateValue = internalSubtypePrivate(isolate);
+  v8::Local<v8::String> subtype = subtypeForInternalType(isolate, type);
+  return object->SetPrivate(context, privateValue, subtype).FromMaybe(false);
+}
+
+bool markArrayEntriesAsInternal(v8::Local<v8::Context> context,
+                                v8::Local<v8::Array> array,
+                                V8InternalValueType type) {
+  v8::Isolate* isolate = context->GetIsolate();
+  v8::Local<v8::Private> privateValue = internalSubtypePrivate(isolate);
+  v8::Local<v8::String> subtype = subtypeForInternalType(isolate, type);
+  for (uint32_t i = 0; i < array->Length(); ++i) {
+    v8::Local<v8::Value> entry;
+    if (!array->Get(context, i).ToLocal(&entry) || !entry->IsObject())
+      return false;
+    if (!entry.As<v8::Object>()
+             ->SetPrivate(context, privateValue, subtype)
+             .FromMaybe(false))
+      return false;
+  }
+  return true;
+}
+
+v8::Local<v8::Value> v8InternalValueTypeFrom(v8::Local<v8::Context> context,
+                                             v8::Local<v8::Object> object) {
+  v8::Isolate* isolate = context->GetIsolate();
+  v8::Local<v8::Private> privateValue = internalSubtypePrivate(isolate);
+  if (!object->HasPrivate(context, privateValue).FromMaybe(false))
+    return v8::Null(isolate);
+  v8::Local<v8::Value> subtypeValue;
+  if (!object->GetPrivate(context, privateValue).ToLocal(&subtypeValue) ||
+      !subtypeValue->IsString())
+    return v8::Null(isolate);
+  return subtypeValue;
+}
+
+}  // namespace v8_inspector

src/inspector/v8-internal-value-type.h

+// Copyright 2016 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef V8_INSPECTOR_V8_INTERNAL_VALUE_TYPE_H_
+#define V8_INSPECTOR_V8_INTERNAL_VALUE_TYPE_H_
+
+#include "include/v8.h"
+
+namespace v8_inspector {
+
+enum class V8InternalValueType { kEntry, kLocation, kScope, kScopeList };
+
+bool markAsInternal(v8::Local<v8::Context>, v8::Local<v8::Object>,
+                    V8InternalValueType);
+bool markArrayEntriesAsInternal(v8::Local<v8::Context>, v8::Local<v8::Array>,
+                                V8InternalValueType);
+v8::Local<v8::Value> v8InternalValueTypeFrom(v8::Local<v8::Context>,
+                                             v8::Local<v8::Object>);
+
+}  // namespace v8_inspector
+
+#endif  // V8_INSPECTOR_V8_INTERNAL_VALUE_TYPE_H_

src/inspector/v8-value-utils.cc

@@ -6,6 +6,102 @@
 
 namespace v8_inspector {
 
+namespace {
+
+protocol::Response toProtocolValue(v8::Local<v8::Context> context,
+                                   v8::Local<v8::Value> value, int maxDepth,
+                                   std::unique_ptr<protocol::Value>* result) {
+  using protocol::Response;
+  if (value.IsEmpty()) {
+    UNREACHABLE();
+  }
+
+  if (!maxDepth) return Response::Error("Object reference chain is too long");
+  maxDepth--;
+
+  if (value->IsNull() || value->IsUndefined()) {
+    *result = protocol::Value::null();
+    return Response::OK();
+  }
+  if (value->IsBoolean()) {
+    *result =
+        protocol::FundamentalValue::create(value.As<v8::Boolean>()->Value());
+    return Response::OK();
+  }
+  if (value->IsNumber()) {
+    double doubleValue = value.As<v8::Number>()->Value();
+    int intValue = static_cast<int>(doubleValue);
+    if (intValue == doubleValue) {
+      *result = protocol::FundamentalValue::create(intValue);
+      return Response::OK();
+    }
+    *result = protocol::FundamentalValue::create(doubleValue);
+    return Response::OK();
+  }
+  if (value->IsString()) {
+    *result = protocol::StringValue::create(
+        toProtocolString(context->GetIsolate(), value.As<v8::String>()));
+    return Response::OK();
+  }
+  if (value->IsArray()) {
+    v8::Local<v8::Array> array = value.As<v8::Array>();
+    std::unique_ptr<protocol::ListValue> inspectorArray =
+        protocol::ListValue::create();
+    uint32_t length = array->Length();
+    for (uint32_t i = 0; i < length; i++) {
+      v8::Local<v8::Value> value;
+      if (!array->Get(context, i).ToLocal(&value))
+        return Response::InternalError();
+      std::unique_ptr<protocol::Value> element;
+      Response response = toProtocolValue(context, value, maxDepth, &element);
+      if (!response.isSuccess()) return response;
+      inspectorArray->pushValue(std::move(element));
+    }
+    *result = std::move(inspectorArray);
+    return Response::OK();
+  }
+  if (value->IsObject()) {
+    std::unique_ptr<protocol::DictionaryValue> jsonObject =
+        protocol::DictionaryValue::create();
+    v8::Local<v8::Object> object = v8::Local<v8::Object>::Cast(value);
+    v8::Local<v8::Array> propertyNames;
+    if (!object->GetPropertyNames(context).ToLocal(&propertyNames))
+      return Response::InternalError();
+    uint32_t length = propertyNames->Length();
+    for (uint32_t i = 0; i < length; i++) {
+      v8::Local<v8::Value> name;
+      if (!propertyNames->Get(context, i).ToLocal(&name))
+        return Response::InternalError();
+      // FIXME(yurys): v8::Object should support GetOwnPropertyNames
+      if (name->IsString()) {
+        v8::Maybe<bool> hasRealNamedProperty = object->HasRealNamedProperty(
+            context, v8::Local<v8::String>::Cast(name));
+        if (hasRealNamedProperty.IsNothing() ||
+            !hasRealNamedProperty.FromJust())
+          continue;
+      }
+      v8::Local<v8::String> propertyName;
+      if (!name->ToString(context).ToLocal(&propertyName)) continue;
+      v8::Local<v8::Value> property;
+      if (!object->Get(context, name).ToLocal(&property))
+        return Response::InternalError();
+      if (property->IsUndefined()) continue;
+      std::unique_ptr<protocol::Value> propertyValue;
+      Response response =
+          toProtocolValue(context, property, maxDepth, &propertyValue);
+      if (!response.isSuccess()) return response;
+      jsonObject->setValue(
+          toProtocolString(context->GetIsolate(), propertyName),
+          std::move(propertyValue));
+    }
+    *result = std::move(jsonObject);
+    return Response::OK();
+  }
+  return Response::Error("Object couldn't be returned by value");
+}
+
+}  // namespace
+
 v8::Maybe<bool> createDataProperty(v8::Local<v8::Context> context,
                                    v8::Local<v8::Object> object,
                                    v8::Local<v8::Name> key,
@@ -26,4 +122,11 @@ v8::Maybe<bool> createDataProperty(v8::Local<v8::Context> context,
       v8::Isolate::DisallowJavascriptExecutionScope::THROW_ON_FAILURE);
   return array->CreateDataProperty(context, index, value);
 }
+
+protocol::Response toProtocolValue(v8::Local<v8::Context> context,
+                                   v8::Local<v8::Value> value,
+                                   std::unique_ptr<protocol::Value>* result) {
+  return toProtocolValue(context, value, 1000, result);
+}
+
 }  // namespace v8_inspector

src/inspector/v8-value-utils.h

@@ -18,6 +18,9 @@ v8::Maybe<bool> createDataProperty(v8::Local<v8::Context>,
 v8::Maybe<bool> createDataProperty(v8::Local<v8::Context>, v8::Local<v8::Array>,
                                    int index, v8::Local<v8::Value>);
 
+protocol::Response toProtocolValue(v8::Local<v8::Context>, v8::Local<v8::Value>,
+                                   std::unique_ptr<protocol::Value>* result);
+
 }  // namespace v8_inspector
 
 #endif  // V8_INSPECTOR_V8_VALUE_UTILS_H_

src/inspector/value-mirror.h

-// Copyright 2018 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef V8_INSPECTOR_VALUE_MIRROR_H_
-#define V8_INSPECTOR_VALUE_MIRROR_H_
-
-#include <memory>
-
-#include "src/base/macros.h"
-#include "src/inspector/protocol/Protocol.h"
-#include "src/inspector/protocol/Runtime.h"
-#include "src/inspector/string-16.h"
-
-#include "include/v8-inspector.h"
-#include "include/v8.h"
-
-namespace v8_inspector {
-
-class ValueMirror;
-enum class WrapMode;
-
-struct InternalPropertyMirror {
-  String16 name;
-  std::unique_ptr<ValueMirror> value;
-};
-
-struct PropertyMirror {
-  String16 name;
-  bool writable;
-  bool configurable;
-  bool enumerable;
-  bool isOwn;
-  bool isIndex;
-  std::unique_ptr<ValueMirror> value;
-  std::unique_ptr<ValueMirror> getter;
-  std::unique_ptr<ValueMirror> setter;
-  std::unique_ptr<ValueMirror> symbol;
-  std::unique_ptr<ValueMirror> exception;
-};
-
-class ValueMirror {
- public:
-  virtual ~ValueMirror();
-
-  static std::unique_ptr<ValueMirror> create(v8::Local<v8::Context> context,
-                                             v8::Local<v8::Value> value);
-  virtual protocol::Response buildRemoteObject(
-      v8::Local<v8::Context> context, WrapMode mode,
-      std::unique_ptr<protocol::Runtime::RemoteObject>* result) = 0;
-  virtual void buildPropertyPreview(
-      v8::Local<v8::Context> context, const String16& name,
-      std::unique_ptr<protocol::Runtime::PropertyPreview>*) {}
-  virtual void buildObjectPreview(
-      v8::Local<v8::Context> context, bool generatePreviewForProperties,
-      int* nameLimit, int* indexLimit,
-      std::unique_ptr<protocol::Runtime::ObjectPreview>*) {}
-  virtual void buildEntryPreview(
-      v8::Local<v8::Context> context, bool generatePreviewForProperties,
-      int* nameLimit, int* indexLimit,
-      std::unique_ptr<protocol::Runtime::ObjectPreview>*) {}
-  virtual v8::Local<v8::Value> v8Value() = 0;
-
-  class PropertyAccumulator {
-   public:
-    virtual ~PropertyAccumulator() = default;
-    virtual bool Add(PropertyMirror mirror) = 0;
-  };
-  static bool getProperties(v8::Local<v8::Context> context,
-                            v8::Local<v8::Object> object, bool ownProperties,
-                            bool accessorPropertiesOnly,
-                            PropertyAccumulator* accumulator);
-  static void getInternalProperties(
-      v8::Local<v8::Context> context, v8::Local<v8::Object> object,
-      std::vector<InternalPropertyMirror>* mirrors);
-};
-}  // namespace v8_inspector
-
-#endif  // V8_INSPECTOR_VALUE_MIRROR_H_

test/inspector/BUILD.gn

@@ -44,6 +44,7 @@ v8_executable("inspector-test") {
     "sessions/",
     "testcfg.py",
     "type-profiler/",
+    "../../src/inspector/injected-script-source.js",
   ]
 
   cflags = []

test/inspector/debugger/object-preview-internal-properties-expected.txt

@@ -26,7 +26,18 @@ expression: Object(Symbol(42))
 {
     name : [[PrimitiveValue]]
     type : symbol
-    value : Symbol(42)
+    valuePreview : {
+        description : Symbol
+        overflow : false
+        properties : [
+            [0] : {
+                name : description
+                type : string
+                value : 42
+            }
+        ]
+        type : object
+    }
 }
 
 expression: Object(BigInt(2))

test/inspector/debugger/stepping-ignores-injected-script-expected.txt

+Tests that stepping ignores injected script
+InjectedSciptSource was not reached

test/inspector/debugger/stepping-ignores-injected-script.js

+// Copyright 2017 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+let {session, contextGroup, Protocol} = InspectorTest.start('Tests that stepping ignores injected script');
+
+Protocol.Debugger.onPaused(message => {
+  let url = session._scriptMap.get(message.params.callFrames[0].location.scriptId).url;
+  if (url !== 'test.js') {
+    InspectorTest.log('InjectedSciptSource on stack.');
+    InspectorTest.completeTest();
+  }
+  Protocol.Debugger.stepInto();
+});
+
+session.setupScriptMap();
+Protocol.Debugger.enable();
+Protocol.Debugger.pause();
+Protocol.Runtime.evaluate({expression: 'console.log(42)//# sourceURL=test.js'})
+  .then(() => InspectorTest.log('InjectedSciptSource was not reached'))
+  .then(InspectorTest.completeTest);

test/inspector/debugger/stepping-with-exposed-injected-script-expected.txt

+Tests that stepping does not ignore injected script when passed a flag
+InjectedSciptSource on stack.

test/inspector/debugger/stepping-with-exposed-injected-script.js

+// Copyright 2017 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+// Flags: --expose-inspector-scripts
+
+let {session, contextGroup, Protocol} = InspectorTest.start('Tests that stepping does not ignore injected script when passed a flag');
+
+Protocol.Debugger.onPaused(message => {
+  let url = session._scriptMap.get(message.params.callFrames[0].location.scriptId).url;
+  if (url !== 'test.js') {
+    InspectorTest.log('InjectedSciptSource on stack.');
+    InspectorTest.completeTest();
+  }
+  Protocol.Debugger.stepInto();
+});
+
+session.setupScriptMap();
+Protocol.Debugger.enable();
+Protocol.Debugger.pause();
+Protocol.Runtime.evaluate({expression: 'console.log(42)//# sourceURL=test.js'})
+  .then(() => InspectorTest.log('InjectedSciptSource was not reached'))
+  .then(InspectorTest.completeTest);

test/inspector/inspector.status

@@ -17,6 +17,8 @@
 
 ##############################################################################
 ['system == android', {
+  # https://crbug.com/v8/8160
+  'debugger/stepping-with-exposed-injected-script': [FAIL],
   # https://crbug.com/v8/8197
   'debugger/get-possible-breakpoints-class-fields': [SKIP],
 }],  # 'system == android'