compositor-worker: Add CompositorProxyClient worker client of CompositorWorker.

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

Index: third_party/WebKit/Source/modules/compositorworker/CompositorWorkerGlobalScope.h
diff --git a/third_party/WebKit/Source/modules/compositorworker/CompositorWorkerGlobalScope.h b/third_party/WebKit/Source/modules/compositorworker/CompositorWorkerGlobalScope.h
index b7e1d00fa209ab1ec3a9a8e0e8d13870e90cf305..726131c21e87eea521e774b7d4653940234049f7 100644
--- a/third_party/WebKit/Source/modules/compositorworker/CompositorWorkerGlobalScope.h
+++ b/third_party/WebKit/Source/modules/compositorworker/CompositorWorkerGlobalScope.h
@@ -5,16 +5,18 @@
 #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();
 public:
     static CompositorWorkerGlobalScope* create(CompositorWorkerThread*, PassOwnPtr<WorkerThreadStartupData>, double timeOrigin);
@@ -28,7 +30,7 @@ public:
 
     int requestAnimationFrame(FrameRequestCallback*);
     void cancelAnimationFrame(int id);
-    void executeAnimationFrameCallbacks(double highResTimeNow);
+    bool executeAnimationFrameCallbacks(double highResTimeMs);
 
     // ExecutionContext:
     bool isCompositorWorkerGlobalScope() const override { return true; }
@@ -39,6 +41,7 @@ private:
     CompositorWorkerGlobalScope(const KURL&, const String& userAgent, CompositorWorkerThread*, double timeOrigin, PassOwnPtr<SecurityOrigin::PrivilegeData>, WorkerClients*);
     CompositorWorkerThread* thread() const;
 
+    bool m_executingAnimationFrameCallbacks;
     FrameRequestCallbackCollection m_callbackCollection;
 };