Change mojo URLs from mojo://mojo_foo to mojo://foo.

mojo/services/test_service/test_service_impl.cc

Index: mojo/services/test_service/test_service_impl.cc
diff --git a/mojo/services/test_service/test_service_impl.cc b/mojo/services/test_service/test_service_impl.cc
index 9e589a5cd7bd1de58cf38ca2373e2082d3447c05..073ccce904be15859e16674325df43e435db5ca9 100644
--- a/mojo/services/test_service/test_service_impl.cc
+++ b/mojo/services/test_service/test_service_impl.cc
@@ -57,8 +57,7 @@ void TestServiceImpl::ConnectToAppAndGetTime(
 void TestServiceImpl::StartTrackingRequests(
     const mojo::Callback<void()>& callback) {
   TestRequestTrackerPtr tracker;
-  connection_->ConnectToService(
-      "mojo:mojo_test_request_tracker_app", &tracker);
+  connection_->ConnectToService("mojo:test_request_tracker_app", &tracker);
   tracking_.reset(
       new TestRequestTrackerClientImpl(tracker.Pass(), Name_, callback));
 }