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

chrome/browser/prerender/prerender_contents.cc

 // 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.
 
 #include "chrome/browser/prerender/prerender_contents.h"
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/background_contents_service.h"
 #include "chrome/browser/browsing_instance.h"
 #include "chrome/browser/prerender/prerender_manager.h"
@@ skipping 179 matching lines @@
                                                       false);  // is_dom_ui
 }
 
 void PrerenderContents::ProcessDOMUIMessage(
     const ViewHostMsg_DomMessage_Params& params) {
   render_view_host_->BlockExtensionRequest(params.request_id);
 }
 
 void PrerenderContents::CreateNewWindow(
     int route_id,
-    WindowContainerType window_container_type,
-    const string16& frame_name) {
+    const ViewHostMsg_CreateWindow_Params& params) {
   // Since we don't want to permit child windows that would have a
   // window.opener property, terminate prerendering.
   prerender_manager_->RemoveEntry(this);
 }
 
 void PrerenderContents::CreateNewWidget(int route_id,
                                         WebKit::WebPopupType popup_type) {
   NOTREACHED();
 }
 
@@ skipping 47 matching lines @@
 }
 
 void PrerenderContents::AddAliasURL(const GURL& url) {
   alias_urls_.push_back(url);
 }
 
 bool PrerenderContents::MatchesURL(const GURL& url) const {
   return std::find(alias_urls_.begin(), alias_urls_.end(), url)
       != alias_urls_.end();
 }