Introduce profile for lock screen apps

chrome/browser/ui/app_list/app_list_syncable_service_factory.cc

Index: chrome/browser/ui/app_list/app_list_syncable_service_factory.cc
diff --git a/chrome/browser/ui/app_list/app_list_syncable_service_factory.cc b/chrome/browser/ui/app_list/app_list_syncable_service_factory.cc
index af15bcc4ed8d70e47680887b8655f25570f609bc..f0b07cdc55a793085383f174628656c96584c197 100644
--- a/chrome/browser/ui/app_list/app_list_syncable_service_factory.cc
+++ b/chrome/browser/ui/app_list/app_list_syncable_service_factory.cc
@@ -42,8 +42,10 @@ AppListSyncableServiceFactory* AppListSyncableServiceFactory::GetInstance() {
 std::unique_ptr<KeyedService> AppListSyncableServiceFactory::BuildInstanceFor(
     content::BrowserContext* browser_context) {
   Profile* profile = static_cast<Profile*>(browser_context);
-  if (chromeos::ProfileHelper::IsSigninProfile(profile))
-    return NULL;
+  if (chromeos::ProfileHelper::IsSigninProfile(profile) ||
+      chromeos::ProfileHelper::IsLockScreenAppProfile(profile)) {
+    return nullptr;
+  }
   VLOG(1) << "BuildInstanceFor: " << profile->GetDebugName()
           << " (" << profile << ")";
   return base::MakeUnique<AppListSyncableService>(