Remove SyncSchedulerImpl::OnShouldStopSyncingPermanently

sync/test/engine/fake_sync_scheduler.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/test/engine/fake_sync_scheduler.h"
 
 namespace syncer {
 
 FakeSyncScheduler::FakeSyncScheduler() {}
 
@@ skipping 64 matching lines @@
      const base::TimeDelta& new_interval) {
 }
 
 void FakeSyncScheduler::OnReceivedSessionsCommitDelay(
      const base::TimeDelta& new_delay) {
 }
 
 void FakeSyncScheduler::OnReceivedClientInvalidationHintBufferSize(int size) {
 }
 
-void FakeSyncScheduler::OnShouldStopSyncingPermanently() {
-}
-
 void FakeSyncScheduler::OnSyncProtocolError(
      const sessions::SyncSessionSnapshot& snapshot) {
 }
 
 }  // namespace syncer