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

examples/echo/echo_client.cc

Index: examples/echo/echo_client.cc
diff --git a/examples/echo/echo_client.cc b/examples/echo/echo_client.cc
index 5ff27cf8206d81e70999ccf5dc7e690c2642c21e..8d75af40ac967fc0bcf6764adb2300675caca65a 100644
--- a/examples/echo/echo_client.cc
+++ b/examples/echo/echo_client.cc
@@ -26,7 +26,7 @@ class ResponsePrinter {
 class EchoClientDelegate : public ApplicationDelegate {
  public:
   void Initialize(ApplicationImpl* app) override {
-    app->ConnectToService("mojo:echo_server", &echo_);
+    app->ConnectToServiceDeprecated("mojo:echo_server", &echo_);
 
     echo_->EchoString("hello world", ResponsePrinter());
   }