Add OVERRIDE to media/.

media/base/video_frame.h

 // Copyright (c) 2011 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 MEDIA_BASE_VIDEO_FRAME_H_
 #define MEDIA_BASE_VIDEO_FRAME_H_
 
 #include "media/base/buffers.h"
 
 namespace media {
@@ skipping 61 matching lines @@
   // As opposed to stride(), row_bytes() refers to the bytes representing
   // visible pixels.
   int row_bytes(size_t plane) const;
   int rows(size_t plane) const;
 
   // Returns pointer to the buffer for a given plane. The memory is owned by
   // VideoFrame object and must not be freed by the caller.
   uint8* data(size_t plane) const;
 
   // StreamSample interface.
-  virtual bool IsEndOfStream() const;
+  virtual bool IsEndOfStream() const OVERRIDE;
 
  protected:
   // Clients must use the static CreateFrame() method to create a new frame.
   VideoFrame(Format format,
              size_t video_width,
              size_t video_height);
 
   virtual ~VideoFrame();
 
   // Used internally by CreateFrame().
@@ skipping 21 matching lines @@
 
   // Array of data pointers to each plane.
   uint8* data_[kMaxPlanes];
 
   DISALLOW_COPY_AND_ASSIGN(VideoFrame);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_VIDEO_FRAME_H_