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 68 matching lines @@
 
 using WebKit::WebAudioDevice;
 using WebKit::WebBlobRegistry;
 using WebKit::WebFileSystem;
 using WebKit::WebFrame;
 using WebKit::WebGamepads;
 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;
 using WebKit::WebStorageNamespace;
 using WebKit::WebString;
 using WebKit::WebURL;
 using WebKit::WebVector;
 
 //------------------------------------------------------------------------------
 
@@ skipping 563 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));
 }
 
 //------------------------------------------------------------------------------
 
-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);
+}