Add OVERRIDE to media/.

media/filters/bitstream_converter.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.
 
 // Interface and some concrete classes for applying various transforms
 // to AVPackets.  FFmpegBitstreamConverter, in particular, can be used
 // to apply FFmpeg bitstream filters to the incoming AVPacket to transcode
 // the packet format.
 
 #ifndef MEDIA_FILTERS_BITSTREAM_CONVERTER_H_
 #define MEDIA_FILTERS_BITSTREAM_CONVERTER_H_
 
 #include <string>
 
 #include "base/basictypes.h"
+#include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "media/base/media_export.h"
 
 // FFmpeg types.
 struct AVBitStreamFilterContext;
 struct AVCodecContext;
 struct AVPacket;
 
 namespace media {
 
@@ skipping 14 matching lines @@
 
  private:
   DISALLOW_COPY_AND_ASSIGN(BitstreamConverter);
 };
 
 class IdentityBitstreamConverter : public BitstreamConverter {
  public:
   IdentityBitstreamConverter() {}
   virtual ~IdentityBitstreamConverter() {}
 
-  virtual bool Initialize();
-  virtual bool ConvertPacket(AVPacket* packet);
+  virtual bool Initialize() OVERRIDE;
+  virtual bool ConvertPacket(AVPacket* packet) OVERRIDE;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(IdentityBitstreamConverter);
 };
 
 class MEDIA_EXPORT FFmpegBitstreamConverter : public BitstreamConverter {
  public:
   // Creates FFmpegBitstreamConverter based on the FFmpeg bistream filter
   // corresponding to |filter_name|.
   //
   // The |stream_context| will be used during conversion and should be the
   // AVCodecContext for the stream sourcing these packets. A reference to
   // |stream_context| is retained, so it must outlive this class.
   FFmpegBitstreamConverter(const std::string& filter_name,
                            AVCodecContext* stream_context);
   virtual ~FFmpegBitstreamConverter();
 
-  virtual bool Initialize();
-  virtual bool ConvertPacket(AVPacket* packet);
+  virtual bool Initialize() OVERRIDE;
+  virtual bool ConvertPacket(AVPacket* packet) OVERRIDE;
 
  private:
   std::string filter_name_;
   AVBitStreamFilterContext* stream_filter_;
   AVCodecContext* stream_context_;
 
   DISALLOW_COPY_AND_ASSIGN(FFmpegBitstreamConverter);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_BITSTREAM_CONVERTER_H_