Support SystemTrayDelegate::ShowPowerSettings() in mustash

chrome/browser/ui/ash/system_tray_delegate_chromeos.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 "chrome/browser/ui/ash/system_tray_delegate_chromeos.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <set>
@@ skipping 427 matching lines @@
     content::RecordAction(base::UserMetricsAction("OpenInternetOptionsDialog"));
     ShowSettingsSubPageForActiveUser(page);
   }
 }
 
 void SystemTrayDelegateChromeOS::ShowDisplaySettings() {
   SystemTrayCommon::ShowDisplaySettings();
 }
 
 void SystemTrayDelegateChromeOS::ShowPowerSettings() {
-  // TODO(mash): Refactor out ash::PowerStatus and move to SystemTrayCommon.
-  if (!(switches::PowerOverlayEnabled() ||
-        (ash::PowerStatus::Get()->IsBatteryPresent() &&
-         ash::PowerStatus::Get()->SupportsDualRoleDevices()))) {

[James Cook, 2016/09/27 23:23:13]

I didn't check SupportsDualRoleDevices() since this function is only called from
a dual-role notification.

-    return;
-  }
-  content::RecordAction(base::UserMetricsAction("Tray_ShowPowerOptions"));
-  ShowSettingsSubPageForActiveUser(chrome::kPowerOptionsSubPage);
+  SystemTrayCommon::ShowPowerSettings();
 }
 
 void SystemTrayDelegateChromeOS::ShowChromeSlow() {
   SystemTrayCommon::ShowChromeSlow();
 }
 
 bool SystemTrayDelegateChromeOS::ShouldShowDisplayNotification() {
   // Packaged app is not counted as 'last active', so if a browser opening the
   // display settings is in background of a packaged app, it will return true.
   // TODO(mukai): fix this.
@@ skipping 833 matching lines @@
   LOG(WARNING) << "SystemTrayDelegateChromeOS::GetChildUserMessage call while "
                << "ENABLE_SUPERVISED_USERS undefined.";
   return base::string16();
 }
 
 ash::SystemTrayDelegate* CreateSystemTrayDelegate() {
   return new SystemTrayDelegateChromeOS();
 }
 
 }  // namespace chromeos