Move creation of PeerConnection from the RenderView to the RenderThreadImpl.

content/renderer/media/media_stream_center.h

Index: content/renderer/media/media_stream_center.h
diff --git a/content/renderer/media/media_stream_center.h b/content/renderer/media/media_stream_center.h
index d24ba7558f7a6b3a5311b0e168fb7fdc61ce90fe..c10080efd045971c34f45e2f9a8e95f3291f2cd9 100644
--- a/content/renderer/media/media_stream_center.h
+++ b/content/renderer/media/media_stream_center.h
@@ -14,12 +14,15 @@ namespace WebKit {
 class WebMediaStreamCenterClient;
 }
 
+class MediaStreamDependencyFactory;
+
 namespace content {
 
 class CONTENT_EXPORT MediaStreamCenter
     : NON_EXPORTED_BASE(public WebKit::WebMediaStreamCenter) {
  public:
-  explicit MediaStreamCenter(WebKit::WebMediaStreamCenterClient*);
+  MediaStreamCenter(WebKit::WebMediaStreamCenterClient* client,
+                    MediaStreamDependencyFactory* factory);
 
   virtual void queryMediaStreamSources(
       const WebKit::WebMediaStreamSourcesRequest& request) OVERRIDE;
@@ -45,6 +48,10 @@ class CONTENT_EXPORT MediaStreamCenter
       const WebKit::WebSessionDescriptionDescriptor& description) OVERRIDE;
 
  private:
+  // |rtc_factory_| is a weak pointer and is owned by the RenderThreadImpl.
+  // It is valid as long as  RenderThreadImpl exist.
+  MediaStreamDependencyFactory* rtc_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(MediaStreamCenter);
 };