| Index: content/renderer/gpu/compositor_external_begin_frame_source.h | 
| diff --git a/content/renderer/gpu/compositor_external_begin_frame_source.h b/content/renderer/gpu/compositor_external_begin_frame_source.h | 
| index 41eb692ca383cb7ec05a86371361f321a09c072d..96520a0210d9cfa3a1db2ebc42d1219699295f7e 100644 | 
| --- a/content/renderer/gpu/compositor_external_begin_frame_source.h | 
| +++ b/content/renderer/gpu/compositor_external_begin_frame_source.h | 
| @@ -43,8 +43,7 @@ class CompositorExternalBeginFrameSource | 
| // cc::BeginFrameSource implementation. | 
| void AddObserver(cc::BeginFrameObserver* obs) override; | 
| void RemoveObserver(cc::BeginFrameObserver* obs) override; | 
| -  void DidFinishFrame(cc::BeginFrameObserver* obs, | 
| -                      const cc::BeginFrameAck& ack) override; | 
| +  void DidFinishFrame(cc::BeginFrameObserver* obs) override; | 
| bool IsThrottled() const override; | 
|  | 
| // cc::ExternalBeginFrameSourceClient implementation. | 
|  |