Fix crash on NTP related to multi-profile extensions.

chrome/browser/web_resource/promo_resource_service.h

 // Copyright (c) 2011 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.
 
 #ifndef CHROME_BROWSER_WEB_RESOURCE_PROMO_RESOURCE_SERVICE_H_
 #define CHROME_BROWSER_WEB_RESOURCE_PROMO_RESOURCE_SERVICE_H_
 #pragma once
 
 #include <string>
 
@@ skipping 174 matching lines @@
   //   inproduct: the promo button link
   //   tooltip: the text for the "hide this" link on the promo
   //   name: starts with "webstore_promo" to identify the signal. the second
   //         part contains the release channels targeted (bitwise or of
   //         BuildTypes). The third part is optional and specifies the URL of
   //         the logo image. In the example above, the URL is empty so the
   //         default webstore logo will be used.
   //   answer_id: the promo's id
   void UnpackWebStoreSignal(const base::DictionaryValue& parsed_json);
 
+  // The profile this service belongs to.
+  Profile* profile_;
+
   // Gets mutable dictionary attached to user's preferences, so that we
   // can write resource data back to user's pref file.
   base::DictionaryValue* web_resource_cache_;
 
   // Overrides the current Chrome release channel for testing purposes.
   chrome::VersionInfo::Channel channel_;
 
   DISALLOW_COPY_AND_ASSIGN(PromoResourceService);
 };
 
 #endif  // CHROME_BROWSER_WEB_RESOURCE_PROMO_RESOURCE_SERVICE_H_