Give the main frame a RenderWidget.

content/browser/renderer_host/render_view_host_delegate.h

 // 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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 195 matching lines @@
   // passed to window.open(), and will be empty if none was passed.
   //
   // Note: this is not called "CreateWindow" because that will clash with
   // the Windows function which is actually a #define.
   //
   // TODO(alexmos): This should be moved to RenderFrameHostDelegate, and the
   // corresponding IPC message should be sent by the RenderFrame creating the
   // new window.
   virtual void CreateNewWindow(
       SiteInstance* source_site_instance,
-      int route_id,
-      int main_frame_route_id,
+      int32_t route_id,
+      int32_t main_frame_route_id,
+      int32_t main_frame_widget_route_id,
       const ViewHostMsg_CreateWindow_Params& params,
       SessionStorageNamespace* session_storage_namespace) {}
 
   // The page is trying to open a new widget (e.g. a select popup). The
   // widget should be created associated with the given |route_id| in the
   // process |render_process_id|, but it should not be shown yet. That should
   // happen in response to ShowCreatedWidget.
   // |popup_type| indicates if the widget is a popup and what kind of popup it
   // is (select, autofill...).
   virtual void CreateNewWidget(int32 render_process_id,
@@ skipping 48 matching lines @@
   virtual void SetIsVirtualKeyboardRequested(bool requested) {}
   virtual bool IsVirtualKeyboardRequested();
 
  protected:
   virtual ~RenderViewHostDelegate() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_