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

chrome/browser/sync/glue/sync_backend_host_impl.h

 // Copyright 2013 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_GLUE_SYNC_BACKEND_HOST_IMPL_H_
 #define CHROME_BROWSER_SYNC_GLUE_SYNC_BACKEND_HOST_IMPL_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 261 matching lines @@
 
   // Invoked when the passphrase state has changed. Caches the passphrase state
   // for later use on the UI thread.
   // If |type| is FROZEN_IMPLICIT_PASSPHRASE or CUSTOM_PASSPHRASE,
   // |explicit_passphrase_time| is the time at which that passphrase was set
   // (if available).
   void HandlePassphraseTypeChangedOnFrontendLoop(
       syncer::PassphraseType type,
       base::Time explicit_passphrase_time);
 
+  void HandleLocalSetCustomPassphraseOnFrontendLoop(
+      const syncer::SyncEncryptionHandler::NigoriState& nigori_state);
+
   void HandleStopSyncingPermanentlyOnFrontendLoop();
 
   // Dispatched to from OnConnectionStatusChange to handle updating
   // frontend UI components.
   void HandleConnectionStatusChangeOnFrontendLoop(
       syncer::ConnectionStatus status);
 
   // NotificationObserver implementation.
   void Observe(int type,
                const content::NotificationSource& source,
@@ skipping 62 matching lines @@
   bool invalidation_handler_registered_;
 
   base::WeakPtrFactory<SyncBackendHostImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncBackendHostImpl);
 };
 
 }  // namespace browser_sync
 
 #endif  // CHROME_BROWSER_SYNC_GLUE_SYNC_BACKEND_HOST_IMPL_H_
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