Quit the message loop by default in ShellConnectionLost when ApplicationRunner is used

mojo/shell/tests/connect/connect_test_app.cc

Index: mojo/shell/tests/connect/connect_test_app.cc
diff --git a/mojo/shell/tests/connect/connect_test_app.cc b/mojo/shell/tests/connect/connect_test_app.cc
index 342e14d7deb8a117ababd45fb22eccce591dbda5..4180763f0fff9b2ed8a3c7593c51769fa132eaa7 100644
--- a/mojo/shell/tests/connect/connect_test_app.cc
+++ b/mojo/shell/tests/connect/connect_test_app.cc
@@ -79,12 +79,6 @@ class ConnectTestApp : public ShellClient,
 
     return true;
   }
-  void ShellConnectionLost() override {
-    if (base::MessageLoop::current() &&
-        base::MessageLoop::current()->is_running()) {
-      base::MessageLoop::current()->QuitWhenIdle();
-    }
-  }
 
   // InterfaceFactory<test::mojom::ConnectTestService>:
   void Create(Connection* connection,