Eliminate Connector::Connect(), Connection, etc.

ash/mus/app_launch_unittest.cc

Index: ash/mus/app_launch_unittest.cc
diff --git a/ash/mus/app_launch_unittest.cc b/ash/mus/app_launch_unittest.cc
index 1ee880a4cd046ed73ef02a8e5978b7f25d95f3aa..e9a3e6074cf77eec2d17384f73a4e8f413c626b5 100644
--- a/ash/mus/app_launch_unittest.cc
+++ b/ash/mus/app_launch_unittest.cc
@@ -34,8 +34,8 @@ class AppLaunchTest : public service_manager::test::ServiceTest {
 };
 
 TEST_F(AppLaunchTest, TestQuickLaunch) {
-  connector()->Connect(mojom::kServiceName);
-  connector()->Connect(mash::quick_launch::mojom::kServiceName);
+  connector()->StartService(mojom::kServiceName);
+  connector()->StartService(mash::quick_launch::mojom::kServiceName);
 
   ui::mojom::WindowServerTestPtr test_interface;
   connector()->BindInterface(ui::mojom::kServiceName, &test_interface);