Adding a skeleton MediaStreamCenter.

content/renderer/renderer_webkitplatformsupport_impl.cc

Index: content/renderer/renderer_webkitplatformsupport_impl.cc
diff --git a/content/renderer/renderer_webkitplatformsupport_impl.cc b/content/renderer/renderer_webkitplatformsupport_impl.cc
index 063e5cffeb28cf0581222506cac22294c53f0939..d9ddf31c5e85be4f4721855de29d9f1a211689b5 100644
--- a/content/renderer/renderer_webkitplatformsupport_impl.cc
+++ b/content/renderer/renderer_webkitplatformsupport_impl.cc
@@ -86,6 +86,10 @@ using WebKit::WebIDBFactory;
 using WebKit::WebIDBKey;
 using WebKit::WebIDBKeyPath;
 using WebKit::WebKitPlatformSupport;
+using WebKit::WebMediaStreamCenter;
+using WebKit::WebMediaStreamCenterClient;
+using WebKit::WebPeerConnectionHandler;
+using WebKit::WebPeerConnectionHandlerClient;
 using WebKit::WebSerializedScriptValue;
 using WebKit::WebStorageArea;
 using WebKit::WebStorageEventDispatcher;
@@ -669,14 +673,31 @@ void RendererWebKitPlatformSupportImpl::GetPlugins(
 
 //------------------------------------------------------------------------------
 
-WebKit::WebPeerConnectionHandler*
-RendererWebKitPlatformSupportImpl::createPeerConnectionHandler(
-    WebKit::WebPeerConnectionHandlerClient* client) {
+namespace {
+
+RenderViewImpl* findRenderView() {
   WebFrame* web_frame = WebFrame::frameForCurrentContext();
   if (!web_frame)
     return NULL;
-  RenderViewImpl* render_view = RenderViewImpl::FromWebView(web_frame->view());
+  return RenderViewImpl::FromWebView(web_frame->view());
+}
+
+}
+
+WebPeerConnectionHandler*
+RendererWebKitPlatformSupportImpl::createPeerConnectionHandler(
+    WebPeerConnectionHandlerClient* client) {
+  RenderViewImpl* render_view = findRenderView();
   if (!render_view)
     return NULL;
   return render_view->CreatePeerConnectionHandler(client);
 }
+
+WebMediaStreamCenter*
+RendererWebKitPlatformSupportImpl::createMediaStreamCenter(
+    WebMediaStreamCenterClient* client) {
+  RenderViewImpl* render_view = findRenderView();

[darin (slow to review), 2012/02/13 17:44:30]

yeah, what piman said.  if you need the interface to be RenderView specific,
then this create function needs to live on Web{View,Frame}Client instead.

+  if (!render_view)
+    return NULL;
+  return render_view->CreateMediaStreamCenter(client);
+}