[Sync] Add ability to save/restore Nigori to SyncEncryptionHandlerImpl

chrome/browser/sync/profile_sync_service.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_SYNC_PROFILE_SYNC_SERVICE_H_
 #define CHROME_BROWSER_SYNC_PROFILE_SYNC_SERVICE_H_
 
 #include <set>
 #include <string>
 #include <utility>
@@ skipping 401 matching lines @@
   void OnPassphraseRequired(
       syncer::PassphraseRequiredReason reason,
       const sync_pb::EncryptedData& pending_keys) override;
   void OnPassphraseAccepted() override;
   void OnEncryptedTypesChanged(syncer::ModelTypeSet encrypted_types,
                                bool encrypt_everything) override;
   void OnEncryptionComplete() override;
   void OnMigrationNeededForTypes(syncer::ModelTypeSet types) override;
   void OnExperimentsChanged(const syncer::Experiments& experiments) override;
   void OnActionableError(const syncer::SyncProtocolError& error) override;
+  void OnLocalSetCustomPassphrase(
+      const syncer::SyncEncryptionHandler::NigoriState& nigori_state) override;
 
   // DataTypeManagerObserver implementation.
   void OnConfigureDone(
       const sync_driver::DataTypeManager::ConfigureResult& result) override;
   void OnConfigureStart() override;
 
   // DataTypeEncryptionHandler implementation.
   bool IsPassphraseRequired() const override;
   syncer::ModelTypeSet GetEncryptedDataTypes() const override;
 
@@ skipping 665 matching lines @@
   base::WeakPtrFactory<ProfileSyncService> startup_controller_weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileSyncService);
 };
 
 bool ShouldShowActionOnUI(
     const syncer::SyncProtocolError& error);
 
 
 #endif  // CHROME_BROWSER_SYNC_PROFILE_SYNC_SERVICE_H_