Mark ApplicationImpl::ConnectTo{Application,Service}() as deprecated.

services/js/echo_apptest.cc

Index: services/js/echo_apptest.cc
diff --git a/services/js/echo_apptest.cc b/services/js/echo_apptest.cc
index d11dc199857cf9aded765831c5aaacbd6ec7a0cd..7a8a3c5e35f3a328c5c2de49f8d8c60818faf670 100644
--- a/services/js/echo_apptest.cc
+++ b/services/js/echo_apptest.cc
@@ -20,7 +20,7 @@ class JSEchoTest : public test::JSApplicationTestBase {
   void SetUp() override {
     ApplicationTestBase::SetUp();
     const std::string& url = JSAppURL("echo.js");
-    application_impl()->ConnectToService(url, &echo_service_);
+    application_impl()->ConnectToServiceDeprecated(url, &echo_service_);
   }
 
   mojo::EchoServicePtr echo_service_;