[NTP] Cleanup: add brackets in components/ntp_snippets. [2/2]

components/ntp_snippets/sessions/tab_delegate_sync_adapter.cc

 // Copyright 2016 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/ntp_snippets/sessions/tab_delegate_sync_adapter.h"
 
 #include "components/sync/driver/sync_service.h"
 #include "components/sync_sessions/open_tabs_ui_delegate.h"
 
 using syncer::SyncService;
@@ skipping 39 matching lines @@
 
 void TabDelegateSyncAdapter::OnSyncConfigurationCompleted() {
   InvokeCallback();
 }
 
 void TabDelegateSyncAdapter::OnForeignSessionUpdated() {
   InvokeCallback();
 }
 
 void TabDelegateSyncAdapter::InvokeCallback() {
-  if (!change_callback_.is_null())
+  if (!change_callback_.is_null()) {
     change_callback_.Run();
+  }
 }
 
 }  // namespace ntp_snippets