Merge 114475 - [chromium] Ensure RateLimiter waits for Swapbuffers completion

Source/WebCore/platform/graphics/chromium/RateLimiter.h

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 18 matching lines @@
 #if USE(ACCELERATED_COMPOSITING)
 
 #include "Timer.h"
 #include <wtf/RefCounted.h>
 #include <wtf/RefPtr.h>
 
 namespace WebCore {
 
 class GraphicsContext3D;
 
+class RateLimiterClient {
+public:
+    virtual void rateLimit() = 0;
+};
+
 // A class containing a timer, which calls rateLimitCHROMIUM on expiry
 class RateLimiter : public RefCounted<RateLimiter> {
 public:
-    static PassRefPtr<RateLimiter> create(GraphicsContext3D*);
+    static PassRefPtr<RateLimiter> create(GraphicsContext3D*, RateLimiterClient*);
     ~RateLimiter();
 
     void start();
     void stop();
 
 private:
-    explicit RateLimiter(GraphicsContext3D*);
+    RateLimiter(GraphicsContext3D*, RateLimiterClient*);
     RefPtr<GraphicsContext3D> m_context;
     bool m_contextSupportsRateLimitingExtension;
     Timer<RateLimiter> m_timer;
     void rateLimitContext(Timer<RateLimiter>*);
+    RateLimiterClient *m_client;
 };
 
 }
 #endif // USE(ACCELERATED_COMPOSITING)
 
 #endif