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

mojo/shell/tests/lifecycle/app_client.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "mojo/shell/tests/lifecycle/app_client.h"
 
 #include "mojo/shell/public/cpp/shell_connection.h"
 
 namespace mojo {
 namespace shell {
 namespace test {
 
 AppClient::AppClient() {}
 AppClient::AppClient(shell::mojom::ShellClientRequest request)
     : connection_(new ShellConnection(this, std::move(request))) {}
 AppClient::~AppClient() {}
 
 bool AppClient::AcceptConnection(mojo::Connection* connection) {
   connection->AddInterface<LifecycleControl>(this);
   return true;
 }
 
+void AppClient::ShellConnectionLost() {
+  GracefulQuit();
+}
+
 void AppClient::Create(mojo::Connection* connection,
                        LifecycleControlRequest request) {
   bindings_.AddBinding(this, std::move(request));
 }
 
 void AppClient::Ping(const PingCallback& callback) {
   callback.Run();
 }
 
 void AppClient::GracefulQuit() {
@@ skipping 18 matching lines @@
 void AppClient::BindingLost() {
   if (bindings_.empty())
     GracefulQuit();
 }
 
 }  // namespace test
 }  // namespace shell
 }  // namespace mojo