Add initial implementation of SourceBufferStream

media/base/buffers.cc

 // 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.
 
 #include "media/base/buffers.h"
 
 namespace media {
 
 Buffer::Buffer(base::TimeDelta timestamp, base::TimeDelta duration)
     : timestamp_(timestamp),
-      duration_(duration) {
+      duration_(duration),
+      is_keyframe_(false) {
+}
+
+Buffer::Buffer(base::TimeDelta timestamp, base::TimeDelta duration,
+               bool is_keyframe)
+    : timestamp_(timestamp),
+      duration_(duration),
+      is_keyframe_(is_keyframe) {
 }
 
 Buffer::~Buffer() {}
 
 bool Buffer::IsEndOfStream() const {
   return GetData() == NULL;
 }
 
 const DecryptConfig* Buffer::GetDecryptConfig() const {
   return NULL;
 }
 
 }  // namespace media