Update {virtual,override,final} to follow C++11 style.

content/renderer/media/android/webmediaplayer_android.h

Index: content/renderer/media/android/webmediaplayer_android.h
diff --git a/content/renderer/media/android/webmediaplayer_android.h b/content/renderer/media/android/webmediaplayer_android.h
index 3ff74e056ea03c4651decf78b39656eca813ba5e..314d7ee56bee498e3910f9629aae4b57542d205d 100644
--- a/content/renderer/media/android/webmediaplayer_android.h
+++ b/content/renderer/media/android/webmediaplayer_android.h
@@ -174,11 +174,10 @@ class WebMediaPlayerAndroid : public blink::WebMediaPlayer,
 
   // cc::VideoFrameProvider implementation. These methods are running on the
   // compositor thread.
-  virtual void SetVideoFrameProviderClient(
+  void SetVideoFrameProviderClient(
       cc::VideoFrameProvider::Client* client) override;
-  virtual scoped_refptr<media::VideoFrame> GetCurrentFrame() override;
-  virtual void PutCurrentFrame(const scoped_refptr<media::VideoFrame>& frame)
-      override;
+  scoped_refptr<media::VideoFrame> GetCurrentFrame() override;
+  void PutCurrentFrame(const scoped_refptr<media::VideoFrame>& frame) override;
 
   // Media player callback handlers.
   void OnMediaMetadataChanged(const base::TimeDelta& duration, int width,
@@ -205,7 +204,7 @@ class WebMediaPlayerAndroid : public blink::WebMediaPlayer,
   void OnRemoteRouteAvailabilityChanged(bool routes_available);
 
   // StreamTextureFactoryContextObserver implementation.
-  virtual void ResetStreamTextureProxy() override;
+  void ResetStreamTextureProxy() override;
 
   // Called when the player is released.
   virtual void OnPlayerReleased();
@@ -216,7 +215,7 @@ class WebMediaPlayerAndroid : public blink::WebMediaPlayer,
   virtual void ReleaseMediaResources();
 
   // RenderFrameObserver implementation.
-  virtual void OnDestruct() override;
+  void OnDestruct() override;
 
 #if defined(VIDEO_HOLE)
   // Calculate the boundary rectangle of the media player (i.e. location and