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

content/renderer/pepper/pepper_media_stream_video_track_host.h

Index: content/renderer/pepper/pepper_media_stream_video_track_host.h
diff --git a/content/renderer/pepper/pepper_media_stream_video_track_host.h b/content/renderer/pepper/pepper_media_stream_video_track_host.h
index b252ff9bff57c89e31024e3d365993271d738466..1ed805245503ec4d95d178c696a0e8277f365981 100644
--- a/content/renderer/pepper/pepper_media_stream_video_track_host.h
+++ b/content/renderer/pepper/pepper_media_stream_video_track_host.h
@@ -37,7 +37,7 @@ class PepperMediaStreamVideoTrackHost : public PepperMediaStreamTrackHostBase,
                                   PP_Instance instance,
                                   PP_Resource resource);
 
-  virtual bool IsMediaStreamVideoTrackHost() override;
+  bool IsMediaStreamVideoTrackHost() override;
 
   blink::WebMediaStreamTrack track() { return track_; }
 
@@ -48,9 +48,9 @@ class PepperMediaStreamVideoTrackHost : public PepperMediaStreamTrackHostBase,
   void InitBuffers();
 
   // PepperMediaStreamTrackHostBase overrides:
-  virtual void OnClose() override;
-  virtual int32_t OnHostMsgEnqueueBuffer(
-      ppapi::host::HostMessageContext* context, int32_t index) override;
+  void OnClose() override;
+  int32_t OnHostMsgEnqueueBuffer(ppapi::host::HostMessageContext* context,
+                                 int32_t index) override;
 
   // Sends frame with |index| to |track_|.
   int32_t SendFrameToTrack(int32_t index);
@@ -60,23 +60,23 @@ class PepperMediaStreamVideoTrackHost : public PepperMediaStreamTrackHostBase,
                     const base::TimeTicks& estimated_capture_time);
 
   // MediaStreamVideoSource overrides:
-  virtual void GetCurrentSupportedFormats(
+  void GetCurrentSupportedFormats(
       int max_requested_width,
       int max_requested_height,
       double max_requested_frame_rate,
       const VideoCaptureDeviceFormatsCB& callback) override;
 
-  virtual void StartSourceImpl(
+  void StartSourceImpl(
       const media::VideoCaptureFormat& format,
       const VideoCaptureDeliverFrameCB& frame_callback) override;
 
-  virtual void StopSourceImpl() override;
+  void StopSourceImpl() override;
 
   // ResourceHost overrides:
-  virtual void DidConnectPendingHostToResource() override;
+  void DidConnectPendingHostToResource() override;
 
   // ResourceMessageHandler overrides:
-  virtual int32_t OnResourceMessageReceived(
+  int32_t OnResourceMessageReceived(
       const IPC::Message& msg,
       ppapi::host::HostMessageContext* context) override;