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

chrome/browser/ui/browser.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_BROWSER_H_
 #define CHROME_BROWSER_UI_BROWSER_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 412 matching lines @@
   virtual void TabReplacedAt(TabStripModel* tab_strip_model,
                              content::WebContents* old_contents,
                              content::WebContents* new_contents,
                              int index) OVERRIDE;
   virtual void TabPinnedStateChanged(content::WebContents* contents,
                                      int index) OVERRIDE;
   virtual void TabStripEmpty() OVERRIDE;
 
   // Overridden from content::WebContentsDelegate:
   virtual bool CanOverscrollContent() const OVERRIDE;
+  virtual bool ShouldPreserveAbortedURLs(content::WebContents* source) OVERRIDE;
   virtual bool PreHandleKeyboardEvent(
       content::WebContents* source,
       const content::NativeWebKeyboardEvent& event,
       bool* is_keyboard_shortcut) OVERRIDE;
   virtual void HandleKeyboardEvent(
       content::WebContents* source,
       const content::NativeWebKeyboardEvent& event) OVERRIDE;
   virtual void OverscrollUpdate(int delta_y) OVERRIDE;
   virtual void ShowValidationMessage(content::WebContents* web_contents,
                                      const gfx::Rect& anchor_in_root_view,
@@ skipping 492 matching lines @@
   base::WeakPtrFactory<Browser> weak_factory_;
 
   scoped_ptr<BrowserContentTranslateDriverObserver> translate_driver_observer_;
 
   scoped_ptr<chrome::ValidationMessageBubble> validation_message_bubble_;
 
   DISALLOW_COPY_AND_ASSIGN(Browser);
 };
 
 #endif  // CHROME_BROWSER_UI_BROWSER_H_