[Sync] Refactor passphrase state handling

sync/internal_api/sync_manager_impl.cc

 // 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.
 
 #include "sync/internal_api/sync_manager_impl.h"
 
 #include <string>
 
 #include "base/base64.h"
 #include "base/bind.h"
@@ skipping 540 matching lines @@
 void SyncManagerImpl::OnEncryptionComplete() {
   // Does nothing.
 }
 
 void SyncManagerImpl::OnCryptographerStateChanged(
     Cryptographer* cryptographer) {
   allstatus_.SetCryptographerReady(cryptographer->is_ready());
   allstatus_.SetCryptoHasPendingKeys(cryptographer->has_pending_keys());
 }
 
+void SyncManagerImpl::OnPassphraseStateChanged(PassphraseState state) {
+  // Does nothing.
+}
+
 void SyncManagerImpl::StartSyncingNormally(
     const ModelSafeRoutingInfo& routing_info) {
   // Start the sync scheduler.
   // TODO(sync): We always want the newest set of routes when we switch back
   // to normal mode. Figure out how to enforce set_routing_info is always
   // appropriately set and that it's only modified when switching to normal
   // mode.
   DCHECK(thread_checker_.CalledOnValidThread());
   session_context_->set_routing_info(routing_info);
   scheduler_->Start(SyncScheduler::NORMAL_MODE);
@@ skipping 793 matching lines @@
 int SyncManagerImpl::GetDefaultNudgeDelay() {
   return kDefaultNudgeDelayMilliseconds;
 }
 
 // static.
 int SyncManagerImpl::GetPreferencesNudgeDelay() {
   return kPreferencesNudgeDelayMilliseconds;
 }
 
 }  // namespace syncer