Revert 96974 - Remove mock_ffmpeg and update media unittests.

media/base/test_data_util.h

-// Copyright (c) 2011 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_TEST_DATA_UTIL_H_
-#define MEDIA_BASE_TEST_DATA_UTIL_H_
-
-#include <string>
-
-#include "base/basictypes.h"
-#include "base/scoped_ptr.h"
-#include "media/base/data_buffer.h"
-
-namespace media {
-
-// Reads a test file from media/test/data directory and stores it in
-// a scoped_array.
-//
-//  |name| - The name of the file.
-//  |buffer| - The contents of the file.
-//  |size| - The size of the buffer.
-void ReadTestDataFile(const std::string& name,
-                      scoped_array<uint8>* buffer,
-                      int* size);
-
-// Reads a test file from media/test/data directory and stored it in
-// a Buffer.
-//
-//  |name| - The name of the file.
-//  |buffer| - The contents of the file.
-void ReadTestDataFile(const std::string& name, scoped_refptr<Buffer>* buffer);
-
-}  // namespace media
-
-#endif  // MEDIA_BASE_TEST_DATA_UTIL_H_