Fix warnings when compiling with clang

content/browser/android/cookie_getter_impl.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 "content/browser/android/cookie_getter_impl.h"
 
 #include "base/bind.h"
 #include "content/browser/child_process_security_policy_impl.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
@@ skipping 16 matching lines @@
 }
 
 // The task object that retrieves cookie on the IO thread.
 // TODO(qinmin): refactor this class to make the code reusable by others as
 // there are lots of duplicated functionalities elsewhere.
 class CookieGetterTask
      : public base::RefCountedThreadSafe<CookieGetterTask> {
  public:
   CookieGetterTask(BrowserContext* browser_context,
                    int renderer_id, int routing_id);
-  virtual ~CookieGetterTask();
 
   // Called by CookieGetterImpl to start getting cookies for a URL.
   void RequestCookies(
       const GURL& url, const GURL& first_party_for_cookies,
       const media::CookieGetter::GetCookieCB& callback);
 
  private:
+  friend class base::RefCountedThreadSafe<CookieGetterTask>;
+  virtual ~CookieGetterTask();
+
   void CheckPolicyForCookies(
       const GURL& url, const GURL& first_party_for_cookies,
       const media::CookieGetter::GetCookieCB& callback,
       const net::CookieList& cookie_list);
 
   // Context getter used to get the CookieStore.
   net::URLRequestContextGetter* context_getter_;
 
   // Resource context for checking cookie policies.
   ResourceContext* resource_context_;
@@ skipping 89 matching lines @@
                  base::Bind(&ReturnCookieOnUIThread, cb)));
 }
 
 void CookieGetterImpl::GetCookiesCallback(
     const GetCookieCB& callback, const std::string& cookies) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   callback.Run(cookies);
 }
 
 }  // namespace content