Provide a vsync notification to the renderer

cc/thread_proxy.h

Index: cc/thread_proxy.h
diff --git a/cc/thread_proxy.h b/cc/thread_proxy.h
index bf7d445eca781c3766daaa8dcf90210c2f296625..004cfbf89836fb913d9fff3ae9a92728b6345477 100644
--- a/cc/thread_proxy.h
+++ b/cc/thread_proxy.h
@@ -14,6 +14,7 @@
 #include "cc/proxy.h"
 #include "cc/resource_update_controller.h"
 #include "cc/scheduler.h"
+#include "cc/vsync_time_source.h"
 
 namespace cc {
 
@@ -24,7 +25,7 @@ class Scheduler;
 class ScopedThreadProxy;
 class Thread;
 
-class ThreadProxy : public Proxy, LayerTreeHostImplClient, SchedulerClient, ResourceUpdateControllerClient {
+class ThreadProxy : public Proxy, LayerTreeHostImplClient, SchedulerClient, ResourceUpdateControllerClient, VSyncProvider {
 public:
     static scoped_ptr<Proxy> create(LayerTreeHost*, scoped_ptr<Thread> implThread);
 
@@ -60,6 +61,7 @@ public:
     virtual void didLoseOutputSurfaceOnImplThread() OVERRIDE;
     virtual void onSwapBuffersCompleteOnImplThread() OVERRIDE;
     virtual void onVSyncParametersChanged(base::TimeTicks timebase, base::TimeDelta interval) OVERRIDE;
+    virtual void didVSync(base::TimeTicks frameTime) OVERRIDE;
     virtual void onCanDrawStateChanged(bool canDraw) OVERRIDE;
     virtual void onHasPendingTreeStateChanged(bool hasPendingTree) OVERRIDE;
     virtual void setNeedsRedrawOnImplThread() OVERRIDE;
@@ -87,6 +89,9 @@ public:
     // ResourceUpdateControllerClient implementation
     virtual void readyToFinalizeTextureUpdates() OVERRIDE;
 
+    // VSyncProvider implementation
+    virtual void RequestVSyncNotification(VSyncClient* client) OVERRIDE;
+
     int maxFramesPendingForTesting() const { return m_schedulerOnImplThread->maxFramesPending(); }
 
 private:
@@ -198,6 +203,8 @@ private:
     bool m_nextFrameIsNewlyCommittedFrameOnImplThread;
 
     bool m_renderVSyncEnabled;
+    bool m_renderVSyncNotificationEnabled;
+    VSyncClient* m_vsyncClient;
 
     bool m_insideDraw;