[Sync] Add support for enabling session sync remotely.

chrome/browser/sync/glue/sync_backend_host_unittest.cc

Index: chrome/browser/sync/glue/sync_backend_host_unittest.cc
diff --git a/chrome/browser/sync/glue/sync_backend_host_unittest.cc b/chrome/browser/sync/glue/sync_backend_host_unittest.cc
index 2bf47d19b2f9734c866568b588218a86bb5f6bd8..69d5470e469a99500b2d95c0355175df95d7072d 100644
--- a/chrome/browser/sync/glue/sync_backend_host_unittest.cc
+++ b/chrome/browser/sync/glue/sync_backend_host_unittest.cc
@@ -42,6 +42,12 @@ class MockSyncFrontend : public SyncFrontend {
   MOCK_METHOD0(OnPassphraseAccepted, void());
   MOCK_METHOD1(OnEncryptionComplete, void(const syncable::ModelTypeSet&));
   MOCK_METHOD1(OnMigrationNeededForTypes, void(const syncable::ModelTypeSet&));
+  MOCK_CONST_METHOD1(GetRegisteredDataTypes,
+      void(syncable::ModelTypeSet* types));
+  MOCK_CONST_METHOD1(GetPreferredDataTypes,
+      void(syncable::ModelTypeSet* types));
+  MOCK_METHOD1(RegisterDataTypeController,
+      void(browser_sync::DataTypeController* data_type_controller));
 };
 
 }  // namespace
@@ -100,6 +106,7 @@ TEST_F(SyncBackendHostTest, InitShutdown) {
   credentials.email = "user@example.com";
   credentials.sync_token = "sync_token";
   backend.Initialize(&mock_frontend,
+                     NULL,
                      WeakHandle<JsEventHandler>(),
                      GURL(k_mock_url),
                      syncable::ModelTypeSet(),