Connect mojom::DisplayController from ash to ui.

ash/mus/accelerators/accelerator_controller_delegate_mus.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/accelerators/accelerator_controller_delegate_mus.h"
 
 #include "base/logging.h"
 #include "mash/public/interfaces/launchable.mojom.h"
+#include "services/ui/public/interfaces/display/display_controller.mojom.h"
 
 namespace ash {
 namespace mus {
 
 AcceleratorControllerDelegateMus::AcceleratorControllerDelegateMus(
     shell::Connector* connector)
     : connector_(connector) {
 #if !defined(OS_CHROMEOS)
   // To avoid trybot complaining that |connector_| is not being
   // used in non-ChromeOS.
@@ skipping 24 matching lines @@
     case SCALE_UI_UP:
     case SHOW_SYSTEM_TRAY_BUBBLE:
     case TAKE_PARTIAL_SCREENSHOT:
     case TAKE_SCREENSHOT:
     case TAKE_WINDOW_SCREENSHOT:
     case UNPIN:
       NOTIMPLEMENTED();
       return false;
 
 #if defined(OS_CHROMEOS)
-    case DEBUG_ADD_REMOVE_DISPLAY:
+    case DEBUG_ADD_REMOVE_DISPLAY: {
+      display::mojom::DisplayControllerPtr display_controller;
+      connector_->ConnectToInterface("mojo:ui", &display_controller);
+      display_controller->ToggleVirtualDisplay();
+      break;
+    }
     case DEBUG_TOGGLE_UNIFIED_DESKTOP:
     case DISABLE_GPU_WATCHDOG:
     case LOCK_PRESSED:
     case LOCK_RELEASED:
     case POWER_PRESSED:
     case POWER_RELEASED:
     case SWAP_PRIMARY_DISPLAY:
     case TOGGLE_MIRROR_MODE:
     case TOUCH_HUD_CLEAR:
     case TOUCH_HUD_MODE_CHANGE:
@@ skipping 32 matching lines @@
     const char* const notification_id,
     int message_id,
     int old_shortcut_id,
     int new_shortcut_id) {
   // TODO: http://crbug.com/630316.
   NOTIMPLEMENTED();
 }
 
 }  // namespace mus
 }  // namespace ash