We have a problem in the process on destroying WebContentsImpl because

chrome/browser/ui/android/infobars/auto_login_prompter.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/android/infobars/auto_login_prompter.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/prefs/pref_service.h"
@@ skipping 79 matching lines @@
   // relevant notifications; it will delete itself.
   new AutoLoginPrompter(web_contents, params, url);
 }
 
 void AutoLoginPrompter::DidStopLoading(
     content::RenderViewHost* render_view_host) {
   AddInfoBarToWebContents();
   delete this;
 }
 
-void AutoLoginPrompter::WebContentsDestroyed(WebContents* web_contents) {
+void AutoLoginPrompter::WebContentsDestroyed() {
   // The WebContents was destroyed before the navigation completed.
   delete this;
 }
 
 void AutoLoginPrompter::AddInfoBarToWebContents() {
   if (!infobar_shown_)
     infobar_shown_ = AutoLoginInfoBarDelegate::Create(web_contents(), params_);
 }