replace OVERRIDE and FINAL with override and final in remoting/

remoting/client/plugin/media_source_video_renderer.cc

Index: remoting/client/plugin/media_source_video_renderer.cc
diff --git a/remoting/client/plugin/media_source_video_renderer.cc b/remoting/client/plugin/media_source_video_renderer.cc
index 78fd2196b42b48fc81787ad9839652a414cd7814..e6d21b8f7ca2d2a69cba9407b4ec03d355dcdc5a 100644
--- a/remoting/client/plugin/media_source_video_renderer.cc
+++ b/remoting/client/plugin/media_source_video_renderer.cc
@@ -28,12 +28,12 @@ class MediaSourceVideoRenderer::VideoWriter : public mkvmuxer::IMkvWriter {
   int64_t last_frame_timestamp() { return timecode_ - kFrameIntervalNs; }
 
   // IMkvWriter interface.
-  virtual mkvmuxer::int32 Write(const void* buf, mkvmuxer::uint32 len) OVERRIDE;
-  virtual mkvmuxer::int64 Position() const OVERRIDE;
-  virtual mkvmuxer::int32 Position(mkvmuxer::int64 position) OVERRIDE;
-  virtual bool Seekable() const OVERRIDE;
+  virtual mkvmuxer::int32 Write(const void* buf, mkvmuxer::uint32 len) override;
+  virtual mkvmuxer::int64 Position() const override;
+  virtual mkvmuxer::int32 Position(mkvmuxer::int64 position) override;
+  virtual bool Seekable() const override;
   virtual void ElementStartNotify(mkvmuxer::uint64 element_id,
-                                  mkvmuxer::int64 position) OVERRIDE;
+                                  mkvmuxer::int64 position) override;
 
   scoped_ptr<DataBuffer> OnVideoFrame(const std::string& video_data,
                                       bool keyframe);