Adding a skeleton MediaStreamCenter.

content/renderer/render_thread_impl.cc

 // 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.
 
 #include "content/renderer/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <vector>
@@ skipping 28 matching lines @@
 #include "content/common/web_database_observer_impl.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/renderer_preferences.h"
 #include "content/public/renderer/content_renderer_client.h"
 #include "content/public/renderer/render_process_observer.h"
 #include "content/public/renderer/render_view_visitor.h"
 #include "content/renderer/devtools_agent_filter.h"
 #include "content/renderer/gpu/compositor_thread.h"
 #include "content/renderer/media/audio_input_message_filter.h"
 #include "content/renderer/media/audio_message_filter.h"
+#include "content/renderer/media/media_stream_center.h"
 #include "content/renderer/media/video_capture_impl_manager.h"
 #include "content/renderer/media/video_capture_message_filter.h"
 #include "content/renderer/plugin_channel_host.h"
 #include "content/renderer/render_process_impl.h"
 #include "content/renderer/render_view_impl.h"
 #include "content/renderer/renderer_webkitplatformsupport_impl.h"
 #include "grit/content_resources.h"
 #include "ipc/ipc_channel_handle.h"
 #include "ipc/ipc_platform_file.h"
 #include "net/base/net_errors.h"
@@ skipping 140 matching lines @@
   widget_count_ = 0;
   hidden_widget_count_ = 0;
   idle_notification_delay_in_ms_ = kInitialIdleHandlerDelayMs;
   idle_notifications_to_skip_ = 0;
   compositor_initialized_ = false;
 
   appcache_dispatcher_.reset(new AppCacheDispatcher(Get()));
   main_thread_indexed_db_dispatcher_.reset(
       IndexedDBDispatcher::ThreadSpecificInstance());
 
+  media_stream_center_ = NULL;
+
   db_message_filter_ = new DBMessageFilter();
   AddFilter(db_message_filter_.get());
 
   vc_manager_ = new VideoCaptureImplManager();
   AddFilter(vc_manager_->video_capture_message_filter());
 
   audio_input_message_filter_ = new AudioInputMessageFilter();
   AddFilter(audio_input_message_filter_.get());
 
   audio_message_filter_ = new AudioMessageFilter();
@@ skipping 680 matching lines @@
   gpu_channel_ = new GpuChannelHost(this, client_id);
   gpu_channel_->set_gpu_info(gpu_info);
   content::GetContentClient()->SetGpuInfo(gpu_info);
 
   // Connect to the GPU process if a channel name was received.
   gpu_channel_->Connect(channel_handle, renderer_process_for_gpu);
 
   return GetGpuChannel();
 }
 
+WebKit::WebMediaStreamCenter* RenderThreadImpl::CreateMediaStreamCenter(
+    WebKit::WebMediaStreamCenterClient* client) {
+  if (!CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kEnableMediaStream)) {
+    return NULL;
+  }
+  if (!media_stream_center_)
+    media_stream_center_ = new content::MediaStreamCenter(client);
+  return media_stream_center_;
+}
+
 GpuChannelHost* RenderThreadImpl::GetGpuChannel() {
   if (!gpu_channel_.get())
     return NULL;
 
   if (gpu_channel_->state() != GpuChannelHost::kConnected)
     return NULL;
 
   return gpu_channel_.get();
 }
 
@@ skipping 22 matching lines @@
 
 scoped_refptr<base::MessageLoopProxy>
 RenderThreadImpl::GetFileThreadMessageLoopProxy() {
   DCHECK(message_loop() == MessageLoop::current());
   if (!file_thread_.get()) {
     file_thread_.reset(new base::Thread("Renderer::FILE"));
     file_thread_->Start();
   }
   return file_thread_->message_loop_proxy();
 }