Added Protector backup for Preferences.

chrome/browser/extensions/extension_prefs.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_EXTENSION_PREFS_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_PREFS_H_
 #pragma once
 
 #include <set>
 #include <string>
@@ skipping 103 matching lines @@
   void OnExtensionUninstalled(const std::string& extension_id,
                               const Extension::Location& location,
                               bool external_uninstall);
 
   // Called to change the extension's state when it is enabled/disabled.
   void SetExtensionState(const std::string& extension_id, Extension::State);
 
   // Returns all installed extensions
   void GetExtensions(ExtensionIdSet* out);
 
+  // Returns all installed extensions from |extension_prefs|. This is exposed
+  // for ProtectedPrefsWatcher because it needs access to the extension ID list
+  // before the ExtensionService is initialized.
+  static void GetExtensionsFrom(const base::DictionaryValue* extension_prefs,

[Aaron Boodman, 2012/03/13 19:45:15]

Just return ExtensionIdSet. Most compilers will optimize away the copy, and even
if they don't clarity is more important anyway.

[Ivan Korotkov, 2012/03/14 13:06:45]

Done. Is it ok that there is inconsistency between this and GetExtensions() now?

+                                ExtensionIdSet* out);
+
   // Getter and setter for browser action visibility.
   bool GetBrowserActionVisibility(const Extension* extension);
   void SetBrowserActionVisibility(const Extension* extension, bool visible);
 
   // Did the extension ask to escalate its permission during an upgrade?
   bool DidExtensionEscalatePermissions(const std::string& id);
 
   // If |did_escalate| is true, the preferences for |extension| will be set to
   // require the install warning when the user tries to enable.
   void SetDidExtensionEscalatePermissions(const Extension* extension,
@@ skipping 364 matching lines @@
   // Contains all the logic for handling the order for various extension
   // properties.
   scoped_ptr<ExtensionSorting> extension_sorting_;
 
   scoped_refptr<ExtensionContentSettingsStore> content_settings_store_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionPrefs);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_PREFS_H_