Convert ConnectToApplication to take a params class

mojo/shell/application_manager_unittest.cc

Index: mojo/shell/application_manager_unittest.cc
diff --git a/mojo/shell/application_manager_unittest.cc b/mojo/shell/application_manager_unittest.cc
index e13f616f5573d63e8307b31a62f59cf74de58f9d..1687ecc2ccf3ca7d42e6238e99e2884e34e2464e 100644
--- a/mojo/shell/application_manager_unittest.cc
+++ b/mojo/shell/application_manager_unittest.cc
@@ -246,9 +246,7 @@ class TestAImpl : public TestA {
             TesterContext* test_context,
             InterfaceRequest<TestA> request)
       : test_context_(test_context), binding_(this, request.Pass()) {
-    mojo::URLRequestPtr request2(mojo::URLRequest::New());
-    request2->url = mojo::String::From(kTestBURLString);
-    connection_ = app_impl->ConnectToApplication(request2.Pass());
+    connection_ = app_impl->ConnectToApplication(kTestBURLString);
     connection_->ConnectToService(&b_);
   }