[protector] Added UI for invalid Preferences backup case.

chrome/browser/protector/protected_prefs_watcher.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_PROTECTOR_PROTECTED_PREFS_WATCHER_H_
 #define CHROME_BROWSER_PROTECTOR_PROTECTED_PREFS_WATCHER_H_
 #pragma once
 
 #include <string>
 
@@ skipping 21 matching lines @@
   static void RegisterUserPrefs(PrefService* prefs);
 
   // Returns true if pref named |path| has changed and the backup is valid.
   bool DidPrefChange(const std::string& path) const;
 
   // Returns the backup value for pref named |path| or |NULL| if the pref is not
   // protected, does not exist or the backup is invalid. The returned Value
   // instance is owned by the PrefService.
   const base::Value* GetBackupForPref(const std::string& path) const;
 
+  // Updates the backup signature.
+  void UpdateBackupSignature();
+
   // True if the backup was valid at the profile load time.
   bool is_backup_valid() { return is_backup_valid_; }
 
  private:
   friend class ProtectedPrefsWatcherTest;
 
   // content::NotificationObserver overrides:
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
@@ skipping 10 matching lines @@
   // initialized).
   bool HasBackup() const;
 
   // Creates initial backup entries.
   void InitBackup();
 
   // Updates the backup утекн for |pref_name| and кeturns |true| if the
   // backup has changed.
   bool UpdateBackupEntry(const std::string& pref_name);
 
-  // Updates the backup signature.
-  void UpdateBackupSignature();
-
   // Perform a check that backup is valid and settings have not been modified.
   void ValidateBackup();
 
   // Returns |true| if backup signature is valid.
   bool IsSignatureValid() const;
 
   // Returns data to be signed as string.
   std::string GetSignatureData(PrefService* prefs) const;
 
   // Cached set of extension IDs. They are not changed as frequently
   ExtensionPrefs::ExtensionIdSet cached_extension_ids_;
 
   scoped_ptr<PrefSetObserver> pref_observer_;
 
   // True if the backup was valid at the profile load time.
   bool is_backup_valid_;
 
   Profile* profile_;
 
   DISALLOW_COPY_AND_ASSIGN(ProtectedPrefsWatcher);
 };
 
 }  // namespace protector
 
 #endif  // CHROME_BROWSER_PROTECTOR_PROTECTED_PREFS_WATCHER_H_