Adding ExtensionPrefs methods for storing update-when-idle data....

chrome/browser/extensions/extension_updater.h

 // Copyright (c) 2009 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_EXTENSION_UPDATER_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_UPDATER_H_
 
 #include <deque>
 #include <map>
 #include <set>
@@ skipping 202 matching lines @@
   virtual void OnCRXFetchComplete(const GURL& url,
                                   const URLRequestStatus& status,
                                   int response_code,
                                   const std::string& data);
 
   // Called when a crx file has been written into a temp file, and is ready
   // to be installed.
   void OnCRXFileWritten(const std::string& id, const FilePath& path,
                         const GURL& download_url);
 
-  // Callback for when ExtensionsService::Install is finished.
-  void OnExtensionInstallFinished(const FilePath& path, Extension* extension);
-
   // Verifies downloaded blacklist. Based on the blacklist, calls extension
   // service to unload blacklisted extensions and update pref.
   void ProcessBlacklist(const std::string& data);
 
   // Sets the timer to call TimerFired after roughly |target_delay| from now.
   // To help spread load evenly on servers, this method adds some random
   // jitter. It also saves the scheduled time so it can be reloaded on
   // browser restart.
   void ScheduleNextCheck(const base::TimeDelta& target_delay);
 
@@ skipping 43 matching lines @@
 
   PrefService* prefs_;
 
   scoped_refptr<ExtensionUpdaterFileHandler> file_handler_;
   bool blacklist_checks_enabled_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionUpdater);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_UPDATER_H_