Convert ConnectToApplication to take a params class

device/devices_app/devices_apptest.cc

Index: device/devices_app/devices_apptest.cc
diff --git a/device/devices_app/devices_apptest.cc b/device/devices_app/devices_apptest.cc
index 4416bda68a5d9881e05a700fd97dd3cb0db9741e..ff41a1a62a27006011149710383300db9905b37a 100644
--- a/device/devices_app/devices_apptest.cc
+++ b/device/devices_app/devices_apptest.cc
@@ -21,9 +21,7 @@ class DevicesAppTest : public mojo::test::ApplicationTestBase {
 
   void SetUp() override {
     ApplicationTestBase::SetUp();
-    mojo::URLRequestPtr request = mojo::URLRequest::New();
-    request->url = "mojo:devices";
-    application_impl()->ConnectToService(request.Pass(), &usb_device_manager_);
+    application_impl()->ConnectToService("mojo:devices", &usb_device_manager_);
   }
 
   usb::DeviceManager* usb_device_manager() { return usb_device_manager_.get(); }