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

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

Index: third_party/WebKit/Source/modules/webaudio/AudioWorkletThreadTest.cpp
diff --git a/third_party/WebKit/Source/modules/webaudio/AudioWorkletThreadTest.cpp b/third_party/WebKit/Source/modules/webaudio/AudioWorkletThreadTest.cpp
index a792f5f8f32180ea1c88237deb763399c94c3e75..02751b8cdb3e86d27274f7567c3bf0298191cc9c 100644
--- a/third_party/WebKit/Source/modules/webaudio/AudioWorkletThreadTest.cpp
+++ b/third_party/WebKit/Source/modules/webaudio/AudioWorkletThreadTest.cpp
@@ -9,6 +9,7 @@
 #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"
@@ -46,6 +47,9 @@ class TestAudioWorkletReportingProxy : public WorkerReportingProxy {
                             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 {}
@@ -53,7 +57,10 @@ class TestAudioWorkletReportingProxy : public WorkerReportingProxy {
   void didTerminateWorkerThread() override {}
 
  private:
-  TestAudioWorkletReportingProxy() {}
+  TestAudioWorkletReportingProxy()
+      : m_parentFrameTaskRunners(ParentFrameTaskRunners::create(nullptr)) {}
+
+  Persistent<ParentFrameTaskRunners> m_parentFrameTaskRunners;
 };
 
 }  // namespace