We have a problem in the process on destroying WebContentsImpl because

chrome/browser/ui/browser_browsertest.cc

 // 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.
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
@@ skipping 614 matching lines @@
   explicit RedirectObserver(content::WebContents* web_contents)
       : WebContentsObserver(web_contents) {
   }
 
   virtual void DidNavigateAnyFrame(
       const content::LoadCommittedDetails& details,
       const content::FrameNavigateParams& params) OVERRIDE {
     params_ = params;
   }
 
-  virtual void WebContentsDestroyed(WebContents* contents) OVERRIDE {
+  virtual void WebContentsDestroyed() OVERRIDE {
     // Make sure we don't close the tab while the observer is in scope.
     // See http://crbug.com/314036.
     FAIL() << "WebContents closed during navigation (http://crbug.com/314036).";
   }
 
   const content::FrameNavigateParams& params() const {
     return params_;
   }
 
  private:
@@ skipping 2056 matching lines @@
 #endif
   EXPECT_EQ(exp_commit_size, rwhv_commit_size2);
   EXPECT_EQ(exp_commit_size, wcv_commit_size2);
   gfx::Size exp_final_size(initial_wcv_size);
   exp_final_size.Enlarge(wcv_resize_insets.width(),
                          wcv_resize_insets.height() + height_inset);
   EXPECT_EQ(exp_final_size,
             web_contents->GetRenderWidgetHostView()->GetViewBounds().size());
   EXPECT_EQ(exp_final_size, web_contents->GetView()->GetContainerSize());
 }