Add gapless playback support for AAC playback.

media/base/decoder_buffer.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_H_
 #define MEDIA_BASE_DECODER_BUFFER_H_
 
 #include <string>
 #include <utility>
 
@@ skipping 48 matching lines @@
   //
   // Calling any method other than end_of_stream() on the resulting buffer
   // is disallowed.
   static scoped_refptr<DecoderBuffer> CreateEOSBuffer();
 
   base::TimeDelta timestamp() const {
     DCHECK(!end_of_stream());
     return timestamp_;
   }
 
-  void set_timestamp(const base::TimeDelta& timestamp) {
-    DCHECK(!end_of_stream());
-    timestamp_ = timestamp;
-  }
+  // TODO(dalecurtis): This should be renamed at some point, but to avoid a yak
+  // shave keep as a virtual with hacker_style() for now.
+  virtual void set_timestamp(base::TimeDelta timestamp);
 
   base::TimeDelta duration() const {
     DCHECK(!end_of_stream());
     return duration_;
   }
 
-  void set_duration(const base::TimeDelta& duration) {
+  void set_duration(base::TimeDelta duration) {
     DCHECK(!end_of_stream());
     duration_ = duration;
   }
 
   const uint8* data() const {
     DCHECK(!end_of_stream());
     return data_.get();
   }
 
   uint8* writable_data() const {
@@ skipping 88 matching lines @@
 
   // Constructor helper method for memory allocations.
   void Initialize();
 
   DISALLOW_COPY_AND_ASSIGN(DecoderBuffer);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_DECODER_BUFFER_H_