Changing the Weakptr initialization order in chrome/browser/extension folder

chrome/browser/extensions/updater/extension_downloader.h

 // 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_UPDATER_EXTENSION_DOWNLOADER_H_
 #define CHROME_BROWSER_EXTENSIONS_UPDATER_EXTENSION_DOWNLOADER_H_
 
 #include <deque>
 #include <map>
 #include <set>
@@ skipping 235 matching lines @@
   virtual void OnGetTokenFailure(const OAuth2TokenService::Request* request,
                                  const GoogleServiceAuthError& error) OVERRIDE;
 
   // The delegate that receives the crx files downloaded by the
   // ExtensionDownloader, and that fills in optional ping and update url data.
   ExtensionDownloaderDelegate* delegate_;
 
   // The request context to use for the URLFetchers.
   scoped_refptr<net::URLRequestContextGetter> request_context_;
 
-  // Used to create WeakPtrs to |this|.
-  base::WeakPtrFactory<ExtensionDownloader> weak_ptr_factory_;
-
   // Collects UMA samples that are reported when ReportStats() is called.
   URLStats url_stats_;
 
   // List of data on fetches we're going to do. We limit the number of
   // extensions grouped together in one batch to avoid running into the limits
   // on the length of http GET requests, so there might be multiple
   // ManifestFetchData* objects with the same base_url.
   typedef std::map<std::pair<int, GURL>,
                    std::vector<linked_ptr<ManifestFetchData> > > FetchMap;
   FetchMap fetches_preparing_;
@@ skipping 17 matching lines @@
   // download requests. May be NULL.
   scoped_ptr<IdentityProvider> identity_provider_;
 
   // A Webstore download-scoped access token for the |identity_provider_|'s
   // active account, if any.
   std::string access_token_;
 
   // A pending token fetch request.
   scoped_ptr<OAuth2TokenService::Request> access_token_request_;
 
+  // Used to create WeakPtrs to |this|.
+  base::WeakPtrFactory<ExtensionDownloader> weak_ptr_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(ExtensionDownloader);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_UPDATER_EXTENSION_DOWNLOADER_H_