compositor-worker: Create a separate CompositorWorkerGlobalScope for compositor workers.

Source/modules/compositorworker/CompositorWorkerThread.cpp

 // Copyright 2015 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 "config.h"
 #include "modules/compositorworker/CompositorWorkerThread.h"
 
 #include "bindings/core/v8/V8Initializer.h"
 #include "core/workers/WorkerObjectProxy.h"
 #include "core/workers/WorkerThreadStartupData.h"
+#include "modules/compositorworker/CompositorWorkerGlobalScope.h"
 #include "public/platform/Platform.h"
 
 namespace blink {
 
 PassRefPtr<CompositorWorkerThread> CompositorWorkerThread::create(PassRefPtr<WorkerLoaderProxy> workerLoaderProxy, WorkerObjectProxy& workerObjectProxy, double timeOrigin, PassOwnPtrWillBeRawPtr<WorkerThreadStartupData> startupData)
 {
     ASSERT(isMainThread());
     return adoptRef(new CompositorWorkerThread(workerLoaderProxy, workerObjectProxy, timeOrigin, startupData));
 }
 
 CompositorWorkerThread::CompositorWorkerThread(PassRefPtr<WorkerLoaderProxy> workerLoaderProxy, WorkerObjectProxy& workerObjectProxy, double timeOrigin, PassOwnPtrWillBeRawPtr<WorkerThreadStartupData> startupData)
     : DedicatedWorkerThread(workerLoaderProxy, workerObjectProxy, timeOrigin, startupData)
 {
 }
 
 CompositorWorkerThread::~CompositorWorkerThread()
 {
 }
 
+PassRefPtrWillBeRawPtr<WorkerGlobalScope> CompositorWorkerThread::createWorkerGlobalScope(PassOwnPtrWillBeRawPtr<WorkerThreadStartupData> startupData)
+{
+    return CompositorWorkerGlobalScope::create(this, startupData, timeOrigin());
+}
+
 v8::Isolate* CompositorWorkerThread::initializeIsolate()
 {
     return WorkerThread::initializeIsolate();
 }
 
 void CompositorWorkerThread::willDestroyIsolate()
 {
     WorkerThread::willDestroyIsolate();
 }
 
@@ skipping 16 matching lines @@
 {
     WorkerThread::didStartRunLoop();
 }
 
 void CompositorWorkerThread::didStopRunLoop()
 {
     WorkerThread::didStopRunLoop();
 }
 
 } // namespace blink