We have a problem in the process on destroying WebContentsImpl because

chrome/browser/ui/passwords/manage_passwords_ui_controller.h

 // Copyright 2014 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_PASSWORDS_MANAGE_PASSWORDS_UI_CONTROLLER_H_
 #define CHROME_BROWSER_UI_PASSWORDS_MANAGE_PASSWORDS_UI_CONTROLLER_H_
 
 #include "components/password_manager/core/browser/password_form_manager.h"
 #include "components/password_manager/core/browser/password_store.h"
 #include "components/password_manager/core/browser/password_store_change.h"
@@ skipping 97 matching lines @@
 
   // Called when a passwordform is autofilled, when a new passwordform is
   // submitted, or when a navigation occurs to update the visibility of the
   // manage passwords icon and bubble.
   void UpdateBubbleAndIconVisibility();
 
   // content::WebContentsObserver:
   virtual void DidNavigateMainFrame(
       const content::LoadCommittedDetails& details,
       const content::FrameNavigateParams& params) OVERRIDE;
-  virtual void WebContentsDestroyed(
-      content::WebContents* web_contents) OVERRIDE;
+  virtual void WebContentsDestroyed() OVERRIDE;
 
   // Set by OnPasswordSubmitted() when the user submits a form containing login
   // information.  If the user responds to a subsequent "Do you want to save
   // this password?" prompt, we ask this object to save or blacklist the
   // associated login information in Chrome's password store.
   scoped_ptr<password_manager::PasswordFormManager> form_manager_;
 
   // Stores whether autofill was blocked due to a user's decision to blacklist
   // the current site ("Never save passwords for this site").
   bool autofill_blocked_;
 
   // The origin of the form we're currently dealing with; we'll use this to
   // determine which PasswordStore changes we should care about when updating
   // |password_form_map_|.
   GURL origin_;
 
   DISALLOW_COPY_AND_ASSIGN(ManagePasswordsUIController);
 };
 
 #endif  // CHROME_BROWSER_UI_PASSWORDS_MANAGE_PASSWORDS_UI_CONTROLLER_H_