Worker: Provide a way to access parent frame task runners from a worker thread

third_party/WebKit/Source/modules/webaudio/AudioWorkletThreadTest.cpp

 // Copyright 2016 The Chromium 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 "modules/webaudio/AudioWorkletThread.h"
 
 #include "bindings/core/v8/ScriptSourceCode.h"
 #include "bindings/core/v8/SourceLocation.h"
 #include "bindings/core/v8/V8GCController.h"
 #include "bindings/core/v8/WorkerOrWorkletScriptController.h"
 #include "core/inspector/ConsoleMessage.h"
+#include "core/workers/ParentFrameTaskRunners.h"
 #include "core/workers/WorkerBackingThread.h"
 #include "core/workers/WorkerLoaderProxy.h"
 #include "core/workers/WorkerOrWorkletGlobalScope.h"
 #include "core/workers/WorkerReportingProxy.h"
 #include "core/workers/WorkerThreadStartupData.h"
 #include "platform/CrossThreadFunctional.h"
 #include "platform/WaitableEvent.h"
 #include "platform/WebThreadSupportingGC.h"
 #include "platform/heap/Handle.h"
 #include "platform/testing/TestingPlatformSupport.h"
 #include "platform/testing/UnitTestHelpers.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebAddressSpace.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "wtf/PtrUtil.h"
 #include <memory>
 
 namespace blink {
 
 namespace {
 
 // A null WorkerReportingProxy, supplied when creating AudioWorkletThreads.
 class TestAudioWorkletReportingProxy : public WorkerReportingProxy {
  public:
   static std::unique_ptr<TestAudioWorkletReportingProxy> create() {
     return wrapUnique(new TestAudioWorkletReportingProxy());
   }
 
   // (Empty) WorkerReportingProxy implementation:

[kinuko, 2016/11/28 04:24:09]

Empty -> well, 'almost' empty?

[nhiroki, 2016/11/28 05:29:26]

Acknowledged. I'll fix this in a separate CL.

   void reportException(const String& errorMessage,
                        std::unique_ptr<SourceLocation>,
                        int exceptionId) override {}
   void reportConsoleMessage(MessageSource,
                             MessageLevel,
                             const String& message,
                             SourceLocation*) override {}
   void postMessageToPageInspector(const String&) override {}
+  ParentFrameTaskRunners* getParentFrameTaskRunners() override {
+    return m_parentFrameTaskRunners.get();
+  }
 
   void didEvaluateWorkerScript(bool success) override {}
   void didCloseWorkerGlobalScope() override {}
   void willDestroyWorkerGlobalScope() override {}
   void didTerminateWorkerThread() override {}
 
  private:
-  TestAudioWorkletReportingProxy() {}
+  TestAudioWorkletReportingProxy()
+      : m_parentFrameTaskRunners(ParentFrameTaskRunners::create(nullptr)) {}
+
+  Persistent<ParentFrameTaskRunners> m_parentFrameTaskRunners;
 };
 
 }  // namespace
 
 class AudioWorkletThreadTest : public ::testing::Test {
  public:
   void SetUp() override {
     AudioWorkletThread::createSharedBackingThreadForTest();
     m_reportingProxy = TestAudioWorkletReportingProxy::create();
     m_securityOrigin =
@@ skipping 120 matching lines @@
   ASSERT_TRUE(secondIsolate);
   EXPECT_EQ(firstIsolate, secondIsolate);
 
   // Verify that the isolate can run some scripts correctly in the second
   // worklet.
   checkWorkletCanExecuteScript(secondWorklet.get());
   secondWorklet->terminateAndWait();
 }
 
 }  // namespace blink