[inspector] replaced inspector/Atomics.h with base atomicops.h

BUG=chromium:635948
R=dgozman@chromium.org,alph@chromium.org

Review-Url: https://codereview.chromium.org/2340763003
Cr-Commit-Position: refs/heads/master@{#39453}

src/inspector/Atomics.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_ATOMICS_H_
-#define V8_INSPECTOR_ATOMICS_H_
-
-#include <stdint.h>
-
-#if defined(_MSC_VER)
-#include <windows.h>
-#endif
-
-namespace v8_inspector {
-
-#if defined(_MSC_VER)
-
-inline int atomicIncrement(int volatile* addend) {
-  return InterlockedIncrement(reinterpret_cast<long volatile*>(addend));
-}
-
-#else
-
-inline int atomicAdd(int volatile* addend, int increment) {
-  return __sync_add_and_fetch(addend, increment);
-}
-inline int atomicIncrement(int volatile* addend) {
-  return atomicAdd(addend, 1);
-}
-
-#endif
-
-}  // namespace v8_inspector
-
-#endif  // V8_INSPECTOR_ATOMICS_H_

src/inspector/BUILD.gn

@@ -135,7 +135,6 @@ v8_source_set("inspector") {
   sources += get_target_outputs(":inspector_debugger_script")
   sources += [
     "Allocator.h",
-    "Atomics.h",
     "InjectedScript.cpp",
     "InjectedScript.h",
     "InjectedScriptNative.cpp",

src/inspector/DEPS

 include_rules = [
   "-src",
   "+src/inspector",
+  "+src/base/atomicops.h",
   "+src/base/macros.h",
   "+src/base/logging.h",
-  "+src/base/platform/platform.h"
+  "+src/base/platform/platform.h",
 ]

src/inspector/V8ProfilerAgentImpl.cpp

@@ -4,7 +4,7 @@
 
 #include "src/inspector/V8ProfilerAgentImpl.h"
 
-#include "src/inspector/Atomics.h"
+#include "src/base/atomicops.h"
 #include "src/inspector/StringUtil.h"
 #include "src/inspector/V8Debugger.h"
 #include "src/inspector/V8InspectorImpl.h"
@@ -279,7 +279,8 @@ void V8ProfilerAgentImpl::stop(
 }
 
 String16 V8ProfilerAgentImpl::nextProfileId() {
-  return String16::fromInteger(atomicIncrement(&s_lastProfileId));
+  return String16::fromInteger(
+      v8::base::NoBarrier_AtomicIncrement(&s_lastProfileId, 1));
 }
 
 void V8ProfilerAgentImpl::startProfiling(const String16& title) {

src/inspector/inspector.gypi

@@ -37,7 +37,6 @@
       '../../include/v8-inspector.h',
       '../../include/v8-inspector-protocol.h',
       'inspector/Allocator.h',
-      'inspector/Atomics.h',
       'inspector/InjectedScript.cpp',
       'inspector/InjectedScript.h',
       'inspector/InjectedScriptNative.cpp',