Convert ConnectToApplication to take a params class

components/filesystem/files_test_base.cc

Index: components/filesystem/files_test_base.cc
diff --git a/components/filesystem/files_test_base.cc b/components/filesystem/files_test_base.cc
index bf7a3d034a6ced0e34031b22b91ad669994b86aa..3ed9a61ad174ecee8d34a3b9a8329c3844204543 100644
--- a/components/filesystem/files_test_base.cc
+++ b/components/filesystem/files_test_base.cc
@@ -19,10 +19,7 @@ FilesTestBase::~FilesTestBase() {
 
 void FilesTestBase::SetUp() {
   ApplicationTestBase::SetUp();
-
-  mojo::URLRequestPtr request(mojo::URLRequest::New());
-  request->url = mojo::String::From("mojo:filesystem");
-  application_impl()->ConnectToService(request.Pass(), &files_);
+  application_impl()->ConnectToService("mojo:filesystem", &files_);
 }
 
 void FilesTestBase::OnFileSystemShutdown() {