Track buffered byte ranges correctly in media::Pipeline.

media/base/mock_data_source_host.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_MOCK_DATA_SOURCE_HOST_H_
 #define MEDIA_BASE_MOCK_DATA_SOURCE_HOST_H_
 
 #include <string>
 
 #include "media/base/data_source.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace media {
 
 class MockDataSourceHost : public DataSourceHost {
  public:
   MockDataSourceHost();
   virtual ~MockDataSourceHost();
 
   // DataSourceHost implementation.
   MOCK_METHOD1(SetTotalBytes, void(int64 total_bytes));
-  MOCK_METHOD1(SetBufferedBytes, void(int64 buffered_bytes));
+  MOCK_METHOD2(AddBufferedByteRange, void(int64 start, int64 end));
   MOCK_METHOD1(SetNetworkActivity, void(bool network_activity));
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockDataSourceHost);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_MOCK_DATA_SOURCE_HOST_H_