Revert 96974 - Remove mock_ffmpeg and update media unittests.

media/base/test_data_util.cc

-// 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.
-
-#include "media/base/test_data_util.h"
-
-#include "base/file_util.h"
-#include "base/logging.h"
-#include "base/path_service.h"
-
-namespace media {
-
-void ReadTestDataFile(const std::string& name, scoped_array<uint8>* buffer,
-                      int* size) {
-  FilePath file_path;
-  CHECK(PathService::Get(base::DIR_SOURCE_ROOT, &file_path));
-
-  file_path = file_path.Append(FILE_PATH_LITERAL("media"))
-      .Append(FILE_PATH_LITERAL("test"))
-      .Append(FILE_PATH_LITERAL("data"))
-      .AppendASCII(name);
-
-  int64 tmp = 0;
-  CHECK(file_util::GetFileSize(file_path, &tmp))
-      << "Failed to get file size for '" << name << "'";
-
-  int file_size = static_cast<int>(tmp);
-  buffer->reset(new uint8[file_size]);
-
-  CHECK(file_size == file_util::ReadFile(file_path,
-                                         reinterpret_cast<char*>(buffer->get()),
-                                         file_size))
-    << "Failed to read '" << name << "'";
-  *size = file_size;
-}
-
-void ReadTestDataFile(const std::string& name, scoped_refptr<Buffer>* buffer) {
-  scoped_array<uint8> buf;
-  int buf_size;
-  ReadTestDataFile(name, &buf, &buf_size);
-  *buffer = new DataBuffer(buf.release(), buf_size);
-}
-
-}  // namespace media