We have a problem in the process on destroying WebContentsImpl because

chrome/browser/ui/passwords/manage_passwords_ui_controller.cc

 // 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.
 
 #include "chrome/browser/ui/passwords/manage_passwords_ui_controller.h"
 
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/password_manager/password_store_factory.h"
 #include "chrome/browser/ui/browser_command_controller.h"
@@ skipping 63 matching lines @@
 }
 
 void ManagePasswordsUIController::OnBlacklistBlockedAutofill(
     const PasswordFormMap& password_form_map) {
   password_form_map_ = password_form_map;
   origin_ = password_form_map_.begin()->second->origin;
   state_ = password_manager::ui::BLACKLIST_STATE;
   UpdateBubbleAndIconVisibility();
 }
 
-void ManagePasswordsUIController::WebContentsDestroyed(
-    content::WebContents* web_contents) {
+void ManagePasswordsUIController::WebContentsDestroyed() {
   password_manager::PasswordStore* password_store =
-      GetPasswordStore(web_contents);
+      GetPasswordStore(web_contents());
   if (password_store)
     password_store->RemoveObserver(this);
 }
 
 void ManagePasswordsUIController::OnLoginsChanged(
     const password_manager::PasswordStoreChangeList& changes) {
   for (password_manager::PasswordStoreChangeList::const_iterator it =
            changes.begin();
        it != changes.end();
        it++) {
@@ skipping 95 matching lines @@
     return;
   CommandUpdater* updater = browser->command_controller()->command_updater();
   updater->ExecuteCommand(IDC_MANAGE_PASSWORDS_FOR_PAGE);
 #endif
 }
 
 bool ManagePasswordsUIController::PasswordPendingUserDecision() const {
   return state_ == password_manager::ui::PENDING_PASSWORD_STATE ||
          state_ == password_manager::ui::PENDING_PASSWORD_AND_BUBBLE_STATE;
 }