Standardize usage of virtual/override/final in content/renderer/

content/renderer/media/rtc_video_renderer.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_RENDERER_MEDIA_RTC_VIDEO_RENDERER_H_
 #define CONTENT_RENDERER_MEDIA_RTC_VIDEO_RENDERER_H_
 
 #include "base/callback.h"
 #include "base/memory/weak_ptr.h"
 #include "content/common/content_export.h"
@@ skipping 21 matching lines @@
 // deo_decoder_unittest.cc?revision=180591&view=markup
 class CONTENT_EXPORT RTCVideoRenderer
     : NON_EXPORTED_BASE(public VideoFrameProvider),
       NON_EXPORTED_BASE(public MediaStreamVideoSink) {
  public:
   RTCVideoRenderer(const blink::WebMediaStreamTrack& video_track,
                    const base::Closure& error_cb,
                    const RepaintCB& repaint_cb);
 
   // VideoFrameProvider implementation. Called on the main thread.
-  virtual void Start() override;
-  virtual void Stop() override;
-  virtual void Play() override;
-  virtual void Pause() override;
+  void Start() override;
+  void Stop() override;
+  void Play() override;
+  void Pause() override;
 
  protected:
-  virtual ~RTCVideoRenderer();
+  ~RTCVideoRenderer() override;
 
  private:
   enum State {
     STARTED,
     PAUSED,
     STOPPED,
   };
 
   void OnVideoFrame(const scoped_refptr<media::VideoFrame>& frame,
                     const media::VideoCaptureFormat& format,
                     const base::TimeTicks& estimated_capture_time);
 
   // VideoTrackSink implementation. Called on the main thread.
-  virtual void OnReadyStateChanged(
+  void OnReadyStateChanged(
       blink::WebMediaStreamSource::ReadyState state) override;
 
   void RenderSignalingFrame();
 
   base::Closure error_cb_;
   RepaintCB repaint_cb_;
   scoped_refptr<base::MessageLoopProxy> message_loop_proxy_;
   State state_;
   gfx::Size frame_size_;
   blink::WebMediaStreamTrack video_track_;
   base::WeakPtrFactory<RTCVideoRenderer> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RTCVideoRenderer);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_RTC_VIDEO_RENDERER_H_