Don't use GetAsTabContents. Send notifications from TabContentsView instead.

chrome/browser/tab_contents/tab_contents_view.h

 // Copyright (c) 2010 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 CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_VIEW_H_
 #define CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_VIEW_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 171 matching lines @@
 
   // Common implementations of some RenderViewHostDelegate::View methods.
   RenderViewHostDelegateViewHelper delegate_view_helper_;
 
  private:
   // We implement these functions on RenderViewHostDelegate::View directly and
   // do some book-keeping associated with the request. The request is then
   // forwarded to *Internal which does platform-specific work.
   virtual void CreateNewWindow(
       int route_id,
-      WindowContainerType window_container_type,
-      const string16& frame_name);
+      const ViewHostMsg_CreateWindow_Params& params);
   virtual void CreateNewWidget(int route_id, WebKit::WebPopupType popup_type);
   virtual void CreateNewFullscreenWidget(
       int route_id, WebKit::WebPopupType popup_type);
   virtual void ShowCreatedWindow(int route_id,
                                  WindowOpenDisposition disposition,
                                  const gfx::Rect& initial_pos,
                                  bool user_gesture);
   virtual void ShowCreatedWidget(int route_id, const gfx::Rect& initial_pos);
   virtual void Activate();
   virtual void Deactivate();
   virtual void ShowCreatedFullscreenWidget(int route_id);
 
   // The TabContents whose contents we display.
   TabContents* tab_contents_;
 
   // Tracks created TabContents objects that have not been shown yet. They are
   // identified by the route ID passed to CreateNewWindow.
   typedef std::map<int, TabContents*> PendingContents;
   PendingContents pending_contents_;
 
   // These maps hold on to the widgets that we created on behalf of the
   // renderer that haven't shown yet.
   typedef std::map<int, RenderWidgetHostView*> PendingWidgetViews;
   PendingWidgetViews pending_widget_views_;
 
   DISALLOW_COPY_AND_ASSIGN(TabContentsView);
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_VIEW_H_