Make SyncBackendRegistrar aware of loaded data

sync/internal_api/js_sync_manager_observer_unittest.cc

 // Copyright (c) 2012 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 "sync/internal_api/js_sync_manager_observer.h"
 
 #include "base/basictypes.h"
 #include "base/location.h"
 #include "base/message_loop.h"
 #include "base/values.h"
@@ skipping 30 matching lines @@
 
   void PumpLoop() {
     message_loop_.RunAllPending();
   }
 };
 
 TEST_F(JsSyncManagerObserverTest, NoArgNotifiations) {
   InSequence dummy;
 
   EXPECT_CALL(mock_js_event_handler_,
-              HandleJsEvent("onInitializationComplete",
-                            HasDetails(JsEventDetails())));
-  EXPECT_CALL(mock_js_event_handler_,
               HandleJsEvent("onStopSyncingPermanently",
                             HasDetails(JsEventDetails())));
   EXPECT_CALL(mock_js_event_handler_,
               HandleJsEvent("onEncryptionComplete",
                             HasDetails(JsEventDetails())));
 
-  js_sync_manager_observer_.OnInitializationComplete(WeakHandle<JsBackend>(),
-      true);
   js_sync_manager_observer_.OnStopSyncingPermanently();
   js_sync_manager_observer_.OnEncryptionComplete();
   PumpLoop();
 }
 
+TEST_F(JsSyncManagerObserverTest, OnInitializationComplete) {
+  DictionaryValue expected_details;
+  syncer::ModelTypeSet restored_types;
+  restored_types.Put(BOOKMARKS);
+  restored_types.Put(NIGORI);
+  expected_details.Set("restoredTypes", ModelTypeSetToValue(restored_types));
+
+  EXPECT_CALL(mock_js_event_handler_,
+              HandleJsEvent("onInitializationComplete",
+                            HasDetailsAsDictionary(expected_details)));
+
+  js_sync_manager_observer_.OnInitializationComplete(
+      WeakHandle<JsBackend>(), true, restored_types);
+  PumpLoop();
+}
+
 TEST_F(JsSyncManagerObserverTest, OnSyncCycleCompleted) {
   syncer::ModelTypePayloadMap download_progress_markers;
   sessions::SyncSessionSnapshot snapshot(sessions::ModelNeutralState(),
                                          false,
                                          syncer::ModelTypeSet(),
                                          download_progress_markers,
                                          false,
                                          true,
                                          8,
                                          5,
@@ skipping 124 matching lines @@
               HandleJsEvent("onEncryptedTypesChanged",
                             HasDetailsAsDictionary(expected_details)));
 
   js_sync_manager_observer_.OnEncryptedTypesChanged(
       encrypted_types, encrypt_everything);
   PumpLoop();
 }
 
 }  // namespace
 }  // namespace syncer