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

mojo/shell/tests/lifecycle/app_client.h

 // 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.
 
 #ifndef MOJO_SHELL_TESTS_LIFECYCLE_APP_CLIENT_H_
 #define MOJO_SHELL_TESTS_LIFECYCLE_APP_CLIENT_H_
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "mojo/public/cpp/bindings/binding_set.h"
@@ skipping 19 matching lines @@
   AppClient();
   explicit AppClient(shell::mojom::ShellClientRequest request);
   ~AppClient() override;
 
   void set_runner(ApplicationRunner* runner) {
     runner_ = runner;
   }
 
   // ShellClient:
   bool AcceptConnection(Connection* connection) override;
+  void ShellConnectionLost() override;
 
   // InterfaceFactory<LifecycleControl>:
   void Create(Connection* connection, LifecycleControlRequest request) override;
 
   // LifecycleControl:
   void Ping(const PingCallback& callback) override;
   void GracefulQuit() override;
   void Crash() override;
   void CloseShellConnection() override;
 
  private:
   void BindingLost();
 
   ApplicationRunner* runner_ = nullptr;
   BindingSet<LifecycleControl> bindings_;
   scoped_ptr<ShellConnection> connection_;
 
   DISALLOW_COPY_AND_ASSIGN(AppClient);
 };
 
 }  // namespace test
 }  // namespace shell
 }  // namespace mojo
 
 #endif  // MOJO_SHELL_TESTS_LIFECYCLE_APP_CLIENT_H_