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

components/mus/mus_app.h

 // Copyright 2014 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 COMPONENTS_MUS_MUS_APP_H_
 #define COMPONENTS_MUS_MUS_APP_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 57 matching lines @@
   // TODO(sky): if we allow removal of user ids then we need to close anything
   // associated with the user (all incoming pipes...) on removal.
   UserState* GetUserState(mojo::Connection* connection);
 
   void AddUserIfNecessary(mojo::Connection* connection);
 
   // mojo::ShellClient:
   void Initialize(mojo::Connector* connector, const mojo::Identity& identity,
                   uint32_t id) override;
   bool AcceptConnection(mojo::Connection* connection) override;
+  void ShellConnectionLost() override;
 
   // WindowServerDelegate:
   void OnFirstDisplayReady() override;
   void OnNoMoreDisplays() override;
   scoped_ptr<ws::WindowTreeBinding> CreateWindowTreeBindingForEmbedAtWindow(
       ws::WindowServer* window_server,
       ws::WindowTree* tree,
       mojom::WindowTreeRequest tree_request,
       mojom::WindowTreeClientPtr client) override;
   void CreateDefaultDisplays() override;
@@ skipping 29 matching lines @@
   PendingRequests pending_requests_;
 
   UserIdToUserState user_id_to_user_state_;
 
   DISALLOW_COPY_AND_ASSIGN(MandolineUIServicesApp);
 };
 
 }  // namespace mus
 
 #endif  // COMPONENTS_MUS_MUS_APP_H_