Adding a skeleton MediaStreamCenter.

content/renderer/renderer_webkitplatformsupport_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/renderer_webkitplatformsupport_impl.h"
 
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/platform_file.h"
@@ skipping 654 matching lines @@
 void RendererWebKitPlatformSupportImpl::GetPlugins(
     bool refresh, std::vector<webkit::WebPluginInfo>* plugins) {
   if (!RenderThreadImpl::current()->plugin_refresh_allowed())
     refresh = false;
   RenderThreadImpl::current()->Send(
       new ViewHostMsg_GetPlugins(refresh, plugins));
 }
 
 //------------------------------------------------------------------------------
 
+namespace {
+
+RenderViewImpl* findRenderView() {
+  WebFrame* web_frame = WebFrame::frameForCurrentContext();
+  if (!web_frame)
+    return NULL;
+  return RenderViewImpl::FromWebView(web_frame->view());
+}
+
+}
+
 WebKit::WebPeerConnectionHandler*
 RendererWebKitPlatformSupportImpl::createPeerConnectionHandler(
     WebKit::WebPeerConnectionHandlerClient* client) {
-  WebFrame* web_frame = WebFrame::frameForCurrentContext();
-  if (!web_frame)
-    return NULL;
-  RenderViewImpl* render_view = RenderViewImpl::FromWebView(web_frame->view());
+  RenderViewImpl* render_view = findRenderView();
   if (!render_view)
     return NULL;
   return render_view->CreatePeerConnectionHandler(client);
 }
+
+WebKit::WebMediaStreamCenter*
+RendererWebKitPlatformSupportImpl::createMediaStreamCenter(
+    WebKit::WebMediaStreamCenterClient* client) {
+  RenderViewImpl* render_view = findRenderView();
+  if (!render_view)
+    return NULL;
+  return render_view->CreateMediaStreamCenter(client);
+}