compositor-worker: Initialize CW machinery plumbing to compositor and fire CW rAF callbacks.

third_party/WebKit/Source/modules/compositorworker/CompositorWorkerGlobalScope.h

 // 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.
 
 #ifndef CompositorWorkerGlobalScope_h
 #define CompositorWorkerGlobalScope_h
 
+#include "core/dom/CompositorProxyClient.h"
 #include "core/dom/FrameRequestCallbackCollection.h"
 #include "core/dom/MessagePort.h"
 #include "core/workers/WorkerGlobalScope.h"
+#include "modules/ModulesExport.h"
 
 namespace blink {
 
 class CompositorWorkerThread;
 class WorkerThreadStartupData;
 
-class CompositorWorkerGlobalScope final : public WorkerGlobalScope {
+class MODULES_EXPORT CompositorWorkerGlobalScope final : public WorkerGlobalScope {
     DEFINE_WRAPPERTYPEINFO();
+    USING_PRE_FINALIZER(CompositorWorkerGlobalScope, dispose);
+
 public:
     static CompositorWorkerGlobalScope* create(CompositorWorkerThread*, PassOwnPtr<WorkerThreadStartupData>, double timeOrigin);
     ~CompositorWorkerGlobalScope() override;
+    void dispose();
 
     // EventTarget
     const AtomicString& interfaceName() const override;
 
     void postMessage(ExecutionContext*, PassRefPtr<SerializedScriptValue>, const MessagePortArray&, ExceptionState&);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(message);
 
     int requestAnimationFrame(FrameRequestCallback*);
     void cancelAnimationFrame(int id);
-    void executeAnimationFrameCallbacks(double highResTimeNow);
+    bool executeAnimationFrameCallbacks(double highResTimeNow);

[jbroman, 2016/04/29 19:42:22]

Please also change this parameter name to indicate that it's in ms.

[flackr, 2016/05/03 22:24:54]

Done.

 
     // ExecutionContext:
     bool isCompositorWorkerGlobalScope() const override { return true; }
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     CompositorWorkerGlobalScope(const KURL&, const String& userAgent, CompositorWorkerThread*, double timeOrigin, PassOwnPtr<SecurityOrigin::PrivilegeData>, WorkerClients*);
     CompositorWorkerThread* thread() const;
 
+    bool m_executingAnimationFrameCallbacks;
     FrameRequestCallbackCollection m_callbackCollection;
 };
 
 } // namespace blink
 
 #endif // CompositorWorkerGlobalScope_h