We have a problem in the process on destroying WebContentsImpl because

chrome/browser/ui/views/frame/browser_view_browsertest.cc

 // 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.
 
 #include "chrome/browser/ui/views/frame/browser_view.h"
 
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_tabstrip.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "content/public/browser/invalidate_type.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_observer.h"
 
 typedef InProcessBrowserTest BrowserViewTest;
 
 namespace {
 
 // Used to simulate scenario in a crash. When WebContentsDestroyed() is invoked
 // updates the navigation state of another tab.
 class TestWebContentsObserver : public content::WebContentsObserver {
  public:
   TestWebContentsObserver(content::WebContents* source,
                           content::WebContents* other)
       : content::WebContentsObserver(source),
         other_(other) {}
   virtual ~TestWebContentsObserver() {}
 
-  virtual void WebContentsDestroyed(
-      content::WebContents* web_contents) OVERRIDE {
+  virtual void WebContentsDestroyed() OVERRIDE {
     other_->NotifyNavigationStateChanged(
         content::INVALIDATE_TYPE_URL | content::INVALIDATE_TYPE_LOAD);
   }
 
  private:
   content::WebContents* other_;
 
   DISALLOW_COPY_AND_ASSIGN(TestWebContentsObserver);
 };
 
@@ skipping 21 matching lines @@
       new Browser(Browser::CreateParams(browser()->profile(),
                                         browser()->host_desktop_type()));
   chrome::AddTabAt(browser2, GURL(), -1, true);
   chrome::AddTabAt(browser2, GURL(), -1, true);
   browser2->tab_strip_model()->ActivateTabAt(0, true);
   TestWebContentsObserver observer(
       browser2->tab_strip_model()->GetWebContentsAt(0),
       browser2->tab_strip_model()->GetWebContentsAt(1));
   BrowserView::GetBrowserViewForBrowser(browser2)->GetWidget()->CloseNow();
 }