Update entry page type to include error pages when appropriate.

chrome/browser/prerender/prerender_manager.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_BROWSER_PRERENDER_PRERENDER_MANAGER_H_
 #define CHROME_BROWSER_PRERENDER_PRERENDER_MANAGER_H_
 
 #include <list>
 #include <map>
 #include <string>
@@ skipping 466 matching lines @@
 
     // content::WebContentsObserver implementation.
     virtual void AboutToNavigateRenderView(
         content::RenderViewHost* render_view_host) OVERRIDE;
     virtual void ProvisionalChangeToMainFrameUrl(
         const GURL& url,
         content::RenderFrameHost* render_frame_host) OVERRIDE;
     virtual void DidCommitProvisionalLoadForFrame(
         content::RenderFrameHost* render_frame_host,
         const GURL& validated_url,
+        bool url_is_unreachable,
         ui::PageTransition transition_type) OVERRIDE;
     virtual void DidFailProvisionalLoad(
         content::RenderFrameHost* render_frame_host,
         const GURL& validated_url,
         int error_code,
         const base::string16& error_description) OVERRIDE;
     virtual void WebContentsDestroyed() OVERRIDE;
 
    private:
     void RecordEvent(PrerenderEvent event) const;
@@ skipping 239 matching lines @@
   bool cookie_store_loaded_;
 
   base::Closure on_cookie_store_loaded_cb_for_testing_;
 
   DISALLOW_COPY_AND_ASSIGN(PrerenderManager);
 };
 
 }  // namespace prerender
 
 #endif  // CHROME_BROWSER_PRERENDER_PRERENDER_MANAGER_H_