Don't leave aborted URLs in the omnibox unless we're on a new tab.

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 81 matching lines @@
   // NavigationEntry has started in the browser process.
   virtual void DidStartNavigationToPendingEntry(
       RenderFrameHostImpl* render_frame_host,
       const GURL& url,
       NavigationController::ReloadType reload_type) {}
 
   // Opens a URL with the given parameters. See PageNavigator::OpenURL, which
   // this forwards to.
   virtual void RequestOpenURL(RenderFrameHostImpl* render_frame_host,
                               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_