Add BackupRollbackController for starting backup/rollback

components/sync_driver/sync_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 COMPONENTS_SYNC_DRIVER_SYNC_PREFS_H_
 #define COMPONENTS_SYNC_DRIVER_SYNC_PREFS_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 36 matching lines @@
 //   sync_setup_wizard.cc
 //   sync_setup_wizard_unittest.cc
 //   two_client_preferences_sync_test.cc
 class SyncPrefs : NON_EXPORTED_BASE(public base::NonThreadSafe),
                   public base::SupportsWeakPtr<SyncPrefs> {
  public:
   // |pref_service| may not be NULL.
   // Does not take ownership of |pref_service|.
   explicit SyncPrefs(PrefService* pref_service);
 
+  // For testing.
+  SyncPrefs();
+
   virtual ~SyncPrefs();
 
   static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
 
   void AddSyncPrefObserver(SyncPrefObserver* sync_pref_observer);
   void RemoveSyncPrefObserver(SyncPrefObserver* sync_pref_observer);
 
   // Clears important sync preferences.
   void ClearPreferences();
 
@@ skipping 50 matching lines @@
 #if defined(OS_CHROMEOS)
   // Use this spare bootstrap token only when setting up sync for the first
   // time.
   std::string GetSpareBootstrapToken() const;
   void SetSpareBootstrapToken(const std::string& token);
 #endif
 
   // Merges the given set of types with the set of acknowledged types.
   void AcknowledgeSyncedTypes(syncer::ModelTypeSet types);
 
+  // Get/Set number of rollback attempts allowed.
+  virtual int GetRemainingRollbackTries() const;
+  virtual void SetRemainingRollbackTries(int times);
+
   // For testing.
 
   void SetManagedForTest(bool is_managed);
   syncer::ModelTypeSet GetAcknowledgeSyncedTypesForTest() const;
 
  private:
   void RegisterPrefGroups();
 
   static void RegisterDataTypePreferredPref(
       user_prefs::PrefRegistrySyncable* prefs,
@@ skipping 27 matching lines @@
   // etc.
   typedef std::map<syncer::ModelType, syncer::ModelTypeSet> PrefGroupsMap;
   PrefGroupsMap pref_groups_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncPrefs);
 };
 
 }  // namespace browser_sync
 
 #endif  // COMPONENTS_SYNC_DRIVER_SYNC_PREFS_H_