chromeos: Add DisplayPowerServiceProvider.

chrome/browser/chromeos/power/suspend_observer.cc

 // Copyright (c) 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/chromeos/power/suspend_observer.h"
 
+#include "ash/shell.h"
+#include "ash/wm/user_activity_detector.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/chromeos/login/user_manager.h"
 #include "chrome/browser/extensions/api/system_private/system_private_api.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/common/pref_names.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/display/output_configurator.h"
 
 namespace chromeos {
@@ skipping 18 matching lines @@
   // suspend and ask the session manager to lock the screen.
   Profile* profile = ProfileManager::GetDefaultProfileOrOffTheRecord();
   if (profile && profile->GetPrefs()->GetBoolean(prefs::kEnableScreenLock) &&
       UserManager::Get()->CanCurrentUserLock() && !screen_locked_) {
     screen_lock_callback_ = power_client_->GetSuspendReadinessCallback();
     // TODO(antrim) : additional logging for crbug/173178
     LOG(WARNING) << "Requesting screen lock from SuspendObserver";
     session_client_->RequestLockScreen();
   }
 
+  ash::Shell::GetInstance()->user_activity_detector()->OnDisplayPowerChanging();
   ash::Shell::GetInstance()->output_configurator()->SuspendDisplays();
 }
 
 void SuspendObserver::ScreenIsLocked() {
   screen_locked_ = true;
 
   // Stop blocking suspend after the screen is locked.
   if (!screen_lock_callback_.is_null()) {
     // Run the callback asynchronously.  ScreenIsLocked() is currently
     // called asynchronously after RequestLockScreen(), but this guards
     // against it being made synchronous later.
     MessageLoop::current()->PostTask(FROM_HERE, screen_lock_callback_);
     screen_lock_callback_.Reset();
   }
 }
 
 void SuspendObserver::ScreenIsUnlocked() {
   screen_locked_ = false;
 }
 
 }  // namespace chromeos