[inspector] Add wasm profiling test

This adds a first simple test to check that CPU profiles contain wasm
function names.

R=herhut@chromium.org, kozyatinskiy@chromium.org

Bug: v8:8783
Change-Id: I26b1fd2b7ec555c073d80a464ee8a799b017b07a
Reviewed-on: https://chromium-review.googlesource.com/c/1454597
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Stephan Herhut <herhut@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59703}

test/inspector/cpu-profiler/console-profile-wasm-expected.txt

+Test that console profiles contain wasm function names.
+Compiling wasm.
+Running fib with increasing input until it shows up in the profile.
+Found fib in profile.

test/inspector/cpu-profiler/console-profile-wasm.js

+// Copyright 2019 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(
+    'Test that console profiles contain wasm function names.');
+
+utils.load('test/mjsunit/wasm/wasm-module-builder.js');
+
+// Add fibonacci function.
+var builder = new WasmModuleBuilder();
+builder.addFunction('fib', kSig_i_i)
+    .addBody([
+      kExprGetLocal, 0,
+      kExprGetLocal, 0,
+      kExprI32Const, 2,
+      kExprI32LeS,  // i < 2 ?
+      kExprBrIf, 0, // --> return i
+      kExprI32Const, 1, kExprI32Sub,  // i - 1
+      kExprCallFunction, 0, // fib(i - 1)
+      kExprGetLocal, 0, kExprI32Const, 2, kExprI32Sub,  // i - 2
+      kExprCallFunction, 0, // fib(i - 2)
+      kExprI32Add
+    ])
+    .exportFunc();
+let module_bytes = builder.toArray();
+
+function compile(bytes) {
+  let buffer = new ArrayBuffer(bytes.length);
+  let view = new Uint8Array(buffer);
+  for (var i = 0; i < bytes.length; i++) {
+    view[i] = bytes[i] | 0;
+  }
+  let module = new WebAssembly.Module(buffer);
+  let instance = new WebAssembly.Instance(module);
+  return instance;
+}
+
+function checkError(message)
+{
+  if (message.error) {
+    InspectorTest.log("Error: ");
+    InspectorTest.logMessage(message);
+    InspectorTest.completeTest();
+  }
+}
+
+(async function test() {
+  Protocol.Profiler.enable();
+  checkError(await Protocol.Profiler.start());
+  let found_fib_in_profile = false;
+  let finished_profiles = 0;
+  Protocol.Profiler.onConsoleProfileFinished(e => {
+    ++finished_profiles;
+    if (e.params.profile.nodes.some(n => n.callFrame.functionName === 'fib'))
+      found_fib_in_profile = true;
+  });
+  InspectorTest.log('Compiling wasm.');
+  checkError(await Protocol.Runtime.evaluate({
+    expression: 'const instance = (' + compile + ')(' +
+        JSON.stringify(module_bytes) + ');'
+  }));
+  InspectorTest.log(
+      'Running fib with increasing input until it shows up in the profile.');
+  for (let i = 1; !found_fib_in_profile; ++i) {
+    checkError(await Protocol.Runtime.evaluate(
+        {expression: 'console.profile(\'profile\');'}));
+    checkError(await Protocol.Runtime.evaluate(
+        {expression: 'instance.exports.fib(' + i + ');'}));
+    checkError(await Protocol.Runtime.evaluate(
+        {expression: 'console.profileEnd(\'profile\');'}));
+    if (finished_profiles != i) {
+      InspectorTest.log(
+          'Missing consoleProfileFinished message (expected ' + i + ', got ' +
+          finished_profiles + ')');
+    }
+  }
+  InspectorTest.log('Found fib in profile.');
+  InspectorTest.completeTest();
+})().catch(e => InspectorTest.log('caught: ' + e));

test/inspector/inspector.status

@@ -53,6 +53,7 @@
 ##############################################################################
 ['variant == jitless', {
   # https://crbug.com/v8/7777
+  'cpu-profiler/console-profile-wasm': [SKIP],
   'cpu-profiler/coverage': [SKIP],
   'cpu-profiler/coverage-block': [SKIP],
 }], # variant == jitless