Enable forced extension updates on NaCl arch mismatch

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 148 matching lines @@
     // this fetch.
     int oauth2_attempt_count;
   };
 
   // Helper for AddExtension() and AddPendingExtension().
   bool AddExtensionData(const std::string& id,
                         const base::Version& version,
                         Manifest::Type extension_type,
                         const GURL& extension_update_url,
                         const std::string& update_url_data,
-                        int request_id);
+                        int request_id,
+                        bool force_update,
+                        const std::string& install_source_override);
 
   // Adds all recorded stats taken so far to histogram counts.
   void ReportStats() const;
 
   // Begins an update check.
   void StartUpdateCheck(scoped_ptr<ManifestFetchData> fetch_data);
 
   // Called by RequestQueue when a new manifest fetch request is started.
   void CreateManifestFetcher();
 
@@ skipping 110 matching lines @@
 
   // A pending token fetch request.
   scoped_ptr<OAuth2TokenService::Request> access_token_request_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionDownloader);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_UPDATER_EXTENSION_DOWNLOADER_H_