[Sync] Componentize synced_tab_delegate

components/sync_driver/fake_sync_client.cc

 // Copyright 2015 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_driver/fake_sync_client.h"
 
 #include "base/bind.h"
 #include "components/autofill/core/browser/webdata/autofill_webdata_service.h"
 #include "components/password_manager/core/browser/password_store.h"
 #include "components/sync_driver/fake_sync_service.h"
@@ skipping 53 matching lines @@
 
 BookmarkUndoService* FakeSyncClient::GetBookmarkUndoServiceIfExists() {
   return nullptr;
 }
 
 scoped_refptr<syncer::ExtensionsActivity>
 FakeSyncClient::GetExtensionsActivity() {
   return scoped_refptr<syncer::ExtensionsActivity>();
 }
 
+sync_sessions::SyncSessionsClient* FakeSyncClient::GetSyncSessionsClient() {
+  return nullptr;
+}
+
 base::WeakPtr<syncer::SyncableService>
 FakeSyncClient::GetSyncableServiceForType(syncer::ModelType type) {
   return base::WeakPtr<syncer::SyncableService>();
 }
 
 scoped_refptr<syncer::ModelSafeWorker>
 FakeSyncClient::CreateModelWorkerForGroup(
     syncer::ModelSafeGroup group,
     syncer::WorkerLoopDestructionObserver* observer) {
   return scoped_refptr<syncer::ModelSafeWorker>();
 }
 
 SyncApiComponentFactory* FakeSyncClient::GetSyncApiComponentFactory() {
   return factory_;
 }
 
 }  // namespace sync_driver