Move DataSourceHost to BufferedDataSourceHost.

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();
-
-  MOCK_METHOD1(SetTotalBytes, void(int64 total_bytes));
-  MOCK_METHOD2(AddBufferedByteRange, void(int64 start, int64 end));
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(MockDataSourceHost);
-};
-
-}  // namespace media
-
-#endif  // MEDIA_BASE_MOCK_DATA_SOURCE_HOST_H_