We have a problem in the process on destroying WebContentsImpl because

chrome/browser/extensions/webstore_inline_installer.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 "chrome/browser/extensions/webstore_inline_installer.h"
 
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/profiles/profile.h"
 #include "content/public/browser/web_contents.h"
 
@@ skipping 140 matching lines @@
     return false;
   }
   *error = "";
   return true;
 }
 
 //
 // Private implementation.
 //
 
-void WebstoreInlineInstaller::WebContentsDestroyed(
-    content::WebContents* web_contents) {
+void WebstoreInlineInstaller::WebContentsDestroyed() {
   AbortInstall();
 }
 
 // static
 bool WebstoreInlineInstaller::IsRequestorURLInVerifiedSite(
     const GURL& requestor_url,
     const std::string& verified_site) {
   // Turn the verified site into a URL that can be parsed by URLPattern.
   // |verified_site| must follow the format:
   //
@@ skipping 34 matching lines @@
     DLOG(WARNING) << "Could not parse " << verified_site_pattern_spec <<
         " as URL pattern " << parse_result;
     return false;
   }
   verified_site_pattern.SetScheme("*");
 
   return verified_site_pattern.MatchesURL(requestor_url);
 }
 
 }  // namespace extensions