Allow transitions to WebUI pages which are extension urls (new tab page is the relevant example).

chrome/renderer/chrome_content_renderer_client.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 CHROME_RENDERER_CHROME_CONTENT_RENDERER_CLIENT_H_
 #define CHROME_RENDERER_CHROME_CONTENT_RENDERER_CLIENT_H_
 
 #include <set>
 #include <string>
 
@@ skipping 72 matching lines @@
       media::MessageLoopFactory* message_loop_factory,
       webkit_media::MediaStreamClient* media_stream_client,
       media::MediaLog* media_log) OVERRIDE;
   virtual bool RunIdleHandlerWhenWidgetsHidden() OVERRIDE;
   virtual bool AllowPopup(const GURL& creator) OVERRIDE;
   virtual bool ShouldFork(WebKit::WebFrame* frame,
                           const GURL& url,
                           bool is_initial_navigation,
                           bool* send_referrer) OVERRIDE;
   virtual bool WillSendRequest(WebKit::WebFrame* frame,
+                               content::PageTransition transition_type,
                                const GURL& url,
                                GURL* new_url) OVERRIDE;
   virtual bool ShouldPumpEventsDuringCookieMessage() OVERRIDE;
   virtual void DidCreateScriptContext(WebKit::WebFrame* frame,
                                       v8::Handle<v8::Context> context,
                                       int extension_group,
                                       int world_id) OVERRIDE;
   virtual void WillReleaseScriptContext(WebKit::WebFrame* frame,
                                         v8::Handle<v8::Context> context,
                                         int world_id) OVERRIDE;
@@ skipping 66 matching lines @@
   scoped_ptr<RendererNetPredictor> net_predictor_;
   scoped_ptr<SpellCheck> spellcheck_;
   scoped_ptr<VisitedLinkSlave> visited_link_slave_;
   scoped_ptr<safe_browsing::PhishingClassifierFilter> phishing_classifier_;
   scoped_ptr<prerender::PrerenderDispatcher> prerender_dispatcher_;
 };
 
 }  // namespace chrome
 
 #endif  // CHROME_RENDERER_CHROME_CONTENT_RENDERER_CLIENT_H_