Update entry page type to include error pages when appropriate.

content/browser/frame_host/navigator_delegate.h

 // Copyright 2013 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_FRAME_HOST_NAVIGATOR_DELEGATE_H_
 #define CONTENT_BROWSER_FRAME_HOST_NAVIGATOR_DELEGATE_H_
 
 #include "base/strings/string16.h"
 #include "content/public/browser/invalidate_type.h"
 #include "content/public/browser/navigation_controller.h"
@@ skipping 40 matching lines @@
 
   // A redirect was processed in |render_frame_host| during a provisional load.
   virtual void DidRedirectProvisionalLoad(
       RenderFrameHostImpl* render_frame_host,
       const GURL& validated_target_url) {}
 
   // A navigation was committed in |render_frame_host|.
   virtual void DidCommitProvisionalLoad(
       RenderFrameHostImpl* render_frame_host,
       const GURL& url,
+      bool url_is_unreachable,
       ui::PageTransition transition_type) {}
 
   // Handles post-navigation tasks in navigation BEFORE the entry has been
   // committed to the NavigationController.
   virtual void DidNavigateMainFramePreCommit(bool navigation_is_within_page) {}
 
   // Handles post-navigation tasks in navigation AFTER the entry has been
   // committed to the NavigationController. Note that the NavigationEntry is
   // not provided since it may be invalid/changed after being committed. The
   // NavigationController's last committed entry is for this navigation.
@@ skipping 30 matching lines @@
                               const OpenURLParams& params) {}
 
   // Returns whether URLs for aborted browser-initiated navigations should be
   // preserved in the omnibox.  Defaults to false.
   virtual bool ShouldPreserveAbortedURLs();
 };
 
 }  // namspace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_NAVIGATOR_DELEGATE_H_