Update entry page type to include error pages when appropriate.

chrome/browser/ui/zoom/zoom_controller.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_UI_ZOOM_ZOOM_CONTROLLER_H_
 #define CHROME_BROWSER_UI_ZOOM_ZOOM_CONTROLLER_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 103 matching lines @@
   // Sets the zoom level via HostZoomMap (or stores it locally if in manual zoom
   // mode), and attributes the zoom to |extension|. Returns true on success.
   bool SetZoomLevelByExtension(
       double zoom_level,
       const scoped_refptr<const extensions::Extension>& extension);
 
   // Sets the zoom mode, which defines zoom behavior (see enum ZoomMode).
   void SetZoomMode(ZoomMode zoom_mode);
 
   // content::WebContentsObserver overrides:
+  virtual void DidCommitProvisionalLoadForFrame(
+      content::RenderFrameHost* render_frame_host,
+      const GURL& url,
+      bool url_is_unreachable,
+      ui::PageTransition transition_type) OVERRIDE;
   virtual void DidNavigateMainFrame(
       const content::LoadCommittedDetails& details,
       const content::FrameNavigateParams& params) OVERRIDE;
   virtual void WebContentsDestroyed() OVERRIDE;
 
  protected:
   // Protected for testing.
   explicit ZoomController(content::WebContents* web_contents);
 
  private:
@@ skipping 22 matching lines @@
   // Keeps track of the extension (if any) that initiated the last zoom change
   // that took effect.
   scoped_refptr<const extensions::Extension> last_extension_;
 
   // Observer receiving notifications on state changes.
   ObserverList<ZoomObserver> observers_;
 
   content::BrowserContext* browser_context_;
 
   scoped_ptr<content::HostZoomMap::Subscription> zoom_subscription_;
+  bool is_error_page_;
 
   DISALLOW_COPY_AND_ASSIGN(ZoomController);
 };
 
 #endif  // CHROME_BROWSER_UI_ZOOM_ZOOM_CONTROLLER_H_