[Sync] Enable adding notifier observers from ProfileSyncService

sync/internal_api/sync_manager_impl_unittest.cc

Index: sync/internal_api/sync_manager_impl_unittest.cc
diff --git a/sync/internal_api/syncapi_unittest.cc b/sync/internal_api/sync_manager_impl_unittest.cc
similarity index 99%
rename from sync/internal_api/syncapi_unittest.cc
rename to sync/internal_api/sync_manager_impl_unittest.cc
index e43a2e2ab7760549a5557478e5d1552032b9e86a..6b095431fa1477f8ef3d08f593daa5fd5815d5f7 100644
--- a/sync/internal_api/syncapi_unittest.cc
+++ b/sync/internal_api/sync_manager_impl_unittest.cc
@@ -23,8 +23,8 @@
 #include "base/test/values_test_util.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
-#include "sync/internal_api/public/base/model_type_test_util.h"
 #include "sync/engine/sync_scheduler.h"
+#include "sync/internal_api/public/base/model_type_test_util.h"
 #include "sync/internal_api/public/change_record.h"
 #include "sync/internal_api/public/engine/model_safe_worker.h"
 #include "sync/internal_api/public/engine/polling_constants.h"
@@ -36,8 +36,8 @@
 #include "sync/internal_api/public/test/test_user_share.h"
 #include "sync/internal_api/public/write_node.h"
 #include "sync/internal_api/public/write_transaction.h"
-#include "sync/internal_api/syncapi_internal.h"
 #include "sync/internal_api/sync_manager_impl.h"
+#include "sync/internal_api/syncapi_internal.h"
 #include "sync/js/js_arg_list.h"
 #include "sync/js/js_backend.h"
 #include "sync/js/js_event_handler.h"
@@ -60,9 +60,9 @@
 #include "sync/syncable/syncable_id.h"
 #include "sync/syncable/write_transaction.h"
 #include "sync/test/callback_counter.h"
+#include "sync/test/engine/fake_sync_scheduler.h"
 #include "sync/test/fake_encryptor.h"
 #include "sync/test/fake_extensions_activity_monitor.h"
-#include "sync/test/engine/fake_sync_scheduler.h"
 #include "sync/util/cryptographer.h"
 #include "sync/util/extensions_activity_monitor.h"
 #include "sync/util/test_unrecoverable_error_handler.h"
@@ -963,6 +963,11 @@ TEST_F(SyncManagerTest, UpdateEnabledTypes) {
   sync_manager_.UpdateEnabledTypes(enabled_types);
 }
 
+TEST_F(SyncManagerTest, UpdateRegisteredIds) {
+  EXPECT_CALL(*sync_notifier_mock_, UpdateRegisteredIds(NULL, ObjectIdSet()));
+  sync_manager_.UpdateRegisteredIds(NULL, ObjectIdSet());
+}
+
 TEST_F(SyncManagerTest, ProcessJsMessage) {
   const JsArgList kNoArgs;