Revert of Decouple Media Service

content/common/gpu/media/media_service.cc

-// Copyright 2016 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 "content/common/gpu/media/media_service.h"
-
-#include <utility>
-
-#include "ipc/ipc_message_macros.h"
-#include "ipc/param_traits_macros.h"
-#include "content/common/gpu/gpu_channel.h"
-#include "content/common/gpu/gpu_channel_manager.h"
-#include "content/common/gpu/media/gpu_video_decode_accelerator.h"
-#include "content/common/gpu/media/gpu_video_encode_accelerator.h"
-#include "content/common/gpu/media/media_channel.h"
-
-namespace content {
-
-MediaService::MediaService(GpuChannelManager* channel_manager)
-    : channel_manager_(channel_manager) {}
-
-MediaService::~MediaService() {}
-
-void MediaService::AddChannel(int32_t client_id) {
-  GpuChannel* gpu_channel = channel_manager_->LookupChannel(client_id);
-  DCHECK(gpu_channel);
-  scoped_ptr<MediaChannel> media_channel(new MediaChannel(gpu_channel));
-  gpu_channel->SetUnhandledMessageListener(media_channel.get());
-  media_channels_.set(client_id, std::move(media_channel));
-}
-
-void MediaService::RemoveChannel(int32_t client_id) {
-  media_channels_.erase(client_id);
-}
-
-void MediaService::DestroyAllChannels() {
-  media_channels_.clear();
-}
-
-}  // namespace content