Enabled/disable touch screen in TabletPowerButtonController

ash/common/accelerators/debug_commands.cc

 // Copyright 2013 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/common/accelerators/debug_commands.h"
 
 #include "ash/common/accelerators/accelerator_commands.h"
 #include "ash/common/ash_switches.h"
 #include "ash/common/shell_delegate.h"
 #include "ash/common/system/toast/toast_data.h"
@@ skipping 110 matching lines @@
 
 #if defined(OS_CHROMEOS)
 
 void HandleToggleTouchpad() {
   base::RecordAction(base::UserMetricsAction("Accel_Toggle_Touchpad"));
   ash::WmShell::Get()->delegate()->ToggleTouchpad();
 }
 
 void HandleToggleTouchscreen() {
   base::RecordAction(base::UserMetricsAction("Accel_Toggle_Touchscreen"));
-  ash::WmShell::Get()->delegate()->ToggleTouchscreen();
+  ShellDelegate* delegate = WmShell::Get()->delegate();
+  const bool touch_screen_status = delegate->IsTouchscreenEnabled();
+  delegate->SetTouchscreenEnabled(!touch_screen_status);

[Daniel Erat, 2016/11/30 22:58:07]

nit: i'd just inline this, e.g.

  delegate->SetTouchscreenEnabled(!delegate->IsTouchscreenEnabled());

[Qiang(Joe) Xu, 2016/12/02 17:42:51]

Done.

 }
 
 void HandleToggleTouchView() {
   MaximizeModeController* controller =
       WmShell::Get()->maximize_mode_controller();
   controller->EnableMaximizeModeWindowManager(
       !controller->IsMaximizeModeWindowManagerEnabled());
 }
 
 #endif  // defined(OS_CHROMEOS)
@@ skipping 52 matching lines @@
     case DEBUG_PRINT_WINDOW_HIERARCHY:
       HandlePrintWindowHierarchy();
       break;
     default:
       break;
   }
 }
 
 }  // namespace debug
 }  // namespace ash