Add simple mash context menu support.

ash/mus/sysui_application.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 "ash/mus/sysui_application.h"
 
 #include "ash/desktop_background/desktop_background_controller.h"
 #include "ash/host/ash_window_tree_host_init_params.h"
 #include "ash/host/ash_window_tree_host_platform.h"
 #include "ash/mus/keyboard_ui_mus.h"
@@ skipping 175 matching lines @@
     // Uninstall the ScreenMus installed by WindowManagerConnection, so that ash
     // installs and uses the ScreenAsh. This can be removed once ash learns to
     // talk to mus for managing displays.
     gfx::Screen::SetScreenInstance(nullptr);
 
     // Install some hook so that the WindowTreeHostMus created for widgets can
     // be hooked up correctly.
     native_widget_factory_.reset(new NativeWidgetFactory());
 
     ash::AshWindowTreeHost::SetFactory(base::Bind(&CreateWindowTreeHostMus));
-    ash_delegate_ = new ShellDelegateMus;
+    ash_delegate_ = new ShellDelegateMus(connector);
 
     InitializeComponents();
 
     ash::ShellInitParams init_params;
     init_params.delegate = ash_delegate_;
     init_params.context_factory = new StubContextFactory;
     init_params.blocking_pool = worker_pool_.get();
     init_params.in_mus = true;
     init_params.keyboard_factory =
         base::Bind(&KeyboardUIMus::Create, connector);
@@ skipping 81 matching lines @@
 bool SysUIApplication::AcceptConnection(mojo::Connection* connection) {
   return true;
 }
 
 void SysUIApplication::ShellConnectionLost() {
   base::MessageLoop::current()->QuitWhenIdle();
 }
 
 }  // namespace sysui
 }  // namespace ash