Refactor RenderProcessHost to use IPC::Listener instead of RenderWidgetHost

content/public/browser/render_widget_host.h

Index: content/public/browser/render_widget_host.h
diff --git a/content/public/browser/render_widget_host.h b/content/public/browser/render_widget_host.h
index d58ba8bc943fcaef66df56c44f4dbe8dff005536..5a4918db90205dedc99d04ebbf1c727cae0e89b4 100644
--- a/content/public/browser/render_widget_host.h
+++ b/content/public/browser/render_widget_host.h
@@ -117,6 +117,14 @@ class CONTENT_EXPORT RenderWidgetHost : public IPC::Sender {
   static void AddCreatedCallback(const CreatedCallback& callback);
   static void RemoveCreatedCallback(const CreatedCallback& callback);
 
+  // Returns the RenderWidgetHost given its ID and the ID of its render process.
+  // Returns NULL if the IDs do not correspond to a live RenderWidgetHost.
+  static RenderWidgetHost* FromID(int32 process_id, int32 routing_id);
+
+  typedef std::vector<RenderWidgetHost*> List;
+  // Returns the global list of render widget hosts.
+  static RenderWidgetHost::List GetRenderWidgetHosts();
+
   virtual ~RenderWidgetHost() {}
 
   // Edit operations.