Replace FINAL and OVERRIDE with their C++11 counterparts in content/renderer

content/renderer/media/mock_media_stream_video_source.h

Index: content/renderer/media/mock_media_stream_video_source.h
diff --git a/content/renderer/media/mock_media_stream_video_source.h b/content/renderer/media/mock_media_stream_video_source.h
index ff70fb556141723f885c1db03b8b0fc78de027e2..9602b2fb38e56f938a378e8016cbb95f282e645b 100644
--- a/content/renderer/media/mock_media_stream_video_source.h
+++ b/content/renderer/media/mock_media_stream_video_source.h
@@ -44,7 +44,7 @@ class MockMediaStreamVideoSource : public MediaStreamVideoSource {
   int max_requested_width() const { return max_requested_width_; }
   double max_requested_frame_rate() const { return max_requested_frame_rate_; }
 
-  virtual void SetMutedState(bool muted_state) OVERRIDE {
+  virtual void SetMutedState(bool muted_state) override {
     MediaStreamVideoSource::SetMutedState(muted_state);
     DoSetMutedState(muted_state);
   }
@@ -60,11 +60,11 @@ class MockMediaStreamVideoSource : public MediaStreamVideoSource {
       int max_requested_height,
       int max_requested_width,
       double max_requested_frame_rate,
-      const VideoCaptureDeviceFormatsCB& callback) OVERRIDE;
+      const VideoCaptureDeviceFormatsCB& callback) override;
   virtual void StartSourceImpl(
       const media::VideoCaptureFormat& format,
-      const VideoCaptureDeliverFrameCB& frame_callback) OVERRIDE;
-  virtual void StopSourceImpl() OVERRIDE;
+      const VideoCaptureDeliverFrameCB& frame_callback) override;
+  virtual void StopSourceImpl() override;
 
  private:
   media::VideoCaptureFormat format_;