Add OVERRIDE to media/.

media/base/data_buffer.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.
 
 // A simple implementation of Buffer that takes ownership of the given data
 // pointer.
 //
 // DataBuffer assumes that memory was allocated with new uint8[].
 
 #ifndef MEDIA_BASE_DATA_BUFFER_H_
 #define MEDIA_BASE_DATA_BUFFER_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "media/base/buffers.h"
 
 namespace media {
 
 class MEDIA_EXPORT DataBuffer : public Buffer {
  public:
   // Takes ownership of the passed |buffer|, assumes valid data of size
   // |buffer_size|.
   DataBuffer(uint8* buffer, size_t buffer_size);
 
   // Allocates buffer of size |buffer_size|. If |buffer_size| is 0, |data_| is
   // set to a NULL ptr.
   explicit DataBuffer(size_t buffer_size);
 
   // Buffer implementation.
-  virtual const uint8* GetData() const;
-  virtual size_t GetDataSize() const;
+  virtual const uint8* GetData() const OVERRIDE;
+  virtual size_t GetDataSize() const OVERRIDE;
 
   // Returns a read-write pointer to the buffer data.
   virtual uint8* GetWritableData();
 
   // Updates the size of valid data in bytes, which must be less than or equal
   // to GetBufferSize().
   virtual void SetDataSize(size_t data_size);
 
   // Returns the size of the underlying buffer.
   virtual size_t GetBufferSize() const;
 
  protected:
   virtual ~DataBuffer();
 
  private:
   scoped_array<uint8> data_;
   size_t buffer_size_;
   size_t data_size_;
 
   DISALLOW_COPY_AND_ASSIGN(DataBuffer);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_DATA_BUFFER_H_