[Sync] Remove SyncEngine::UnregisterInvalidationIds

components/sync/engine/fake_sync_engine.cc

 // 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.
 
 #include "components/sync/engine/fake_sync_engine.h"
 
 #include "components/sync/engine/activation_context.h"
 #include "components/sync/engine/sync_engine_host.h"
 
 namespace syncer {
@@ skipping 19 matching lines @@
                                              bool is_explicit) {}
 
 bool FakeSyncEngine::SetDecryptionPassphrase(const std::string& passphrase) {
   return false;
 }
 
 void FakeSyncEngine::StopSyncingForShutdown() {}
 
 void FakeSyncEngine::Shutdown(ShutdownReason reason) {}
 
-void FakeSyncEngine::UnregisterInvalidationIds() {}
-
 ModelTypeSet FakeSyncEngine::ConfigureDataTypes(
     ConfigureReason reason,
     const DataTypeConfigStateMap& config_state_map,
     const base::Callback<void(ModelTypeSet, ModelTypeSet)>& ready_task,
     const base::Callback<void()>& retry_callback) {
   return ModelTypeSet();
 }
 
 void FakeSyncEngine::EnableEncryptEverything() {}
 
@@ skipping 61 matching lines @@
 
 void FakeSyncEngine::ClearServerData(
     const SyncManager::ClearServerDataCallback& callback) {
   callback.Run();
 }
 
 void FakeSyncEngine::OnCookieJarChanged(bool account_mismatch, bool empty_jar) {
 }
 
 }  // namespace syncer