Update the URL if the user cancels a beforeunload handler.

content/browser/renderer_host/render_view_host_delegate.h

 // Copyright (c) 2011 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_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 447 matching lines @@
   virtual void RequestMove(const gfx::Rect& new_bounds) {}
 
   // The RenderView began loading a new page. This corresponds to WebKit's
   // notion of the throbber starting.
   virtual void DidStartLoading() {}
 
   // The RenderView stopped loading a page. This corresponds to WebKit's
   // notion of the throbber stopping.
   virtual void DidStopLoading() {}
 
+  // The pending page load was canceled.
+  virtual void DidCancelLoading() {}
+
   // The RenderView made progress loading a page's top frame.
   // |progress| is a value between 0 (nothing loaded) to 1.0 (top frame
   // entirely loaded).
   virtual void DidChangeLoadProgress(double progress) {}
 
   // The RenderView's main frame document element is ready. This happens when
   // the document has finished parsing.
   virtual void DocumentAvailableInMainFrame(RenderViewHost* render_view_host) {}
 
   // The onload handler in the RenderView's main frame has completed.
@@ skipping 93 matching lines @@
   // Returns true if the delegate will take care of asking the user, otherwise
   // the caller will do the default behavior.
   bool RequestDesktopNotificationPermission(const GURL& source_origin,
                                             int callback_context);
 
  protected:
   virtual ~RenderViewHostDelegate() {}
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_