We have a problem in the process on destroying WebContentsImpl because

chrome/browser/ui/autofill/autofill_popup_controller_interactive_uitest.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 "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/ui/autofill/autofill_popup_view.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
@@ skipping 54 matching lines @@
 }  // namespace
 
 class AutofillPopupControllerBrowserTest
     : public InProcessBrowserTest,
       public content::WebContentsObserver {
  public:
   AutofillPopupControllerBrowserTest() {}
   virtual ~AutofillPopupControllerBrowserTest() {}
 
   virtual void SetUpOnMainThread() OVERRIDE {
-    web_contents_ = browser()->tab_strip_model()->GetActiveWebContents();
-    ASSERT_TRUE(web_contents_ != NULL);
-    Observe(web_contents_);
+    content::WebContents* web_contents =
+        browser()->tab_strip_model()->GetActiveWebContents();
+    ASSERT_TRUE(web_contents != NULL);
+    Observe(web_contents);
 
     ContentAutofillDriver* driver =
-        ContentAutofillDriver::FromWebContents(web_contents_);
+        ContentAutofillDriver::FromWebContents(web_contents);
     autofill_external_delegate_.reset(
        new TestAutofillExternalDelegate(
-           web_contents_,
+           web_contents,
            driver->autofill_manager(),
            driver));
   }
 
   // Normally the WebContents will automatically delete the delegate, but here
   // the delegate is owned by this test, so we have to manually destroy.
-  virtual void WebContentsDestroyed(content::WebContents* web_contents)
+  virtual void WebContentsDestroyed()
       OVERRIDE {

[jam, 2014/05/05 17:46:46]

nit: move override to previous line

[zverre, 2014/05/06 09:37:26]

Done.

-    DCHECK_EQ(web_contents_, web_contents);
-
     autofill_external_delegate_.reset();
   }
 
  protected:
-  content::WebContents* web_contents_;
-
   scoped_ptr<TestAutofillExternalDelegate> autofill_external_delegate_;
 };
 
 // Autofill UI isn't currently hidden on window move on Mac.
 // http://crbug.com/180566
 #if !defined(OS_MACOSX)
 IN_PROC_BROWSER_TEST_F(AutofillPopupControllerBrowserTest,
                        HidePopupOnWindowConfiguration) {
   GenerateTestAutofillPopup(autofill_external_delegate_.get());
 
@@ skipping 22 matching lines @@
                        MAYBE_DeleteDelegateBeforePopupHidden){
   GenerateTestAutofillPopup(autofill_external_delegate_.get());
 
   // Delete the external delegate here so that is gets deleted before popup is
   // hidden. This can happen if the web_contents are destroyed before the popup
   // is hidden. See http://crbug.com/232475
   autofill_external_delegate_.reset();
 }
 
 }  // namespace autofill