Add methods for telling V8 how much memory audio/video is using.

media/base/decoder_buffer_queue.h

 // Copyright (c) 2012 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_DECODER_BUFFER_QUEUE_H_
 #define MEDIA_BASE_DECODER_BUFFER_QUEUE_H_
 
 #include <deque>
 
 #include "base/memory/ref_counted.h"
@@ skipping 24 matching lines @@
 
   // Pops a DecoderBuffer from the front of the queue.
   //
   // It is invalid to call Pop() on an empty queue.
   scoped_refptr<DecoderBuffer> Pop();
 
   // Removes all queued buffers.
   void Clear();
 
   // Returns true if this queue is empty.
-  bool IsEmpty();
+  bool IsEmpty() const;
 
   // Returns the duration of encoded data stored in this queue as measured by
   // the timestamps of the earliest and latest buffers, ignoring out of order
   // buffers.
   //
   // Returns zero if the queue is empty.
   base::TimeDelta Duration();
 
   // Returns the total size of buffers inside the queue.
   size_t data_size() const { return data_size_; }
@@ skipping 11 matching lines @@
 
   // Total size in bytes of buffers in the queue.
   size_t data_size_;
 
   DISALLOW_COPY_AND_ASSIGN(DecoderBufferQueue);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_DECODER_BUFFER_QUEUE_H_