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