chromeos: Add DisplayPowerServiceProvider.

chrome/browser/chromeos/power/output_observer.cc

 // Copyright (c) 2012 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/output_observer.h"
 
 #include "ash/shell.h"
 #include "ash/wm/user_activity_detector.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/display/output_configurator.h"
 
 namespace chromeos {
 
 OutputObserver::OutputObserver() {
   DBusThreadManager::Get()->GetPowerManagerClient()->AddObserver(this);
 }
 
 OutputObserver::~OutputObserver() {
   DBusThreadManager::Get()->GetPowerManagerClient()->RemoveObserver(this);
 }
 
 void OutputObserver::ScreenPowerSet(bool power_on, bool all_displays) {
-  if (!power_on && all_displays) {
-    // All displays are turned off when the device becomes idle, which
-    // may trigger a mouse move. Let the UserActivityDetector know so
-    // that it can ignore such events.
-    ash::Shell::GetInstance()->user_activity_detector()->
-        OnAllOutputsTurnedOff();
-  }
+  // Turning displays off when the device becomes idle or on just before we
+  // suspend may trigger a mouse move, which would then be incorrectly
+  // reported as user activity.  Let the UserActivityDetector know so that
+  // it can ignore such events.
+  ash::Shell::GetInstance()->user_activity_detector()->OnDisplayPowerChanging();
 
-  ash::Shell::GetInstance()->output_configurator()->
-      ScreenPowerSet(power_on, all_displays);
+  DisplayPowerState state = DISPLAY_POWER_ALL_ON;
+  if (power_on && all_displays)
+    state = DISPLAY_POWER_ALL_ON;
+  else if (power_on && !all_displays)
+    state = DISPLAY_POWER_INTERNAL_ON_EXTERNAL_OFF;
+  else if (!power_on && all_displays)
+    state = DISPLAY_POWER_ALL_OFF;
+  else if (!power_on && !all_displays)
+    state = DISPLAY_POWER_INTERNAL_OFF_EXTERNAL_ON;
+
+  ash::Shell::GetInstance()->output_configurator()->SetDisplayPower(
+      state, false);
 }
 
 }  // namespace chromeos