chromeos: Add support for dimming the screen.

ash/shell.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 "ash/shell.h"
 
 #include <algorithm>
 
 #include "ash/app_list/app_list.h"
 #include "ash/ash_switches.h"
@@ skipping 23 matching lines @@
 #include "ash/wm/dialog_frame_view.h"
 #include "ash/wm/event_client_impl.h"
 #include "ash/wm/key_rewriter_event_filter.h"
 #include "ash/wm/panel_layout_manager.h"
 #include "ash/wm/panel_window_event_filter.h"
 #include "ash/wm/partial_screenshot_event_filter.h"
 #include "ash/wm/power_button_controller.h"
 #include "ash/wm/resize_shadow_controller.h"
 #include "ash/wm/root_window_event_filter.h"
 #include "ash/wm/root_window_layout_manager.h"
+#include "ash/wm/screen_dimmer.h"
 #include "ash/wm/shadow_controller.h"
 #include "ash/wm/shelf_layout_manager.h"
 #include "ash/wm/stacking_controller.h"
 #include "ash/wm/status_area_layout_manager.h"
 #include "ash/wm/system_gesture_event_filter.h"
 #include "ash/wm/system_modal_container_layout_manager.h"
 #include "ash/wm/toplevel_window_event_filter.h"
 #include "ash/wm/video_detector.h"
 #include "ash/wm/visibility_controller.h"
 #include "ash/wm/window_cycle_controller.h"
@@ skipping 514 matching lines @@
     delete child;
   }
 
   // These need a valid Shell instance to clean up properly, so explicitly
   // delete them before invalidating the instance.
   // Alphabetical.
   activation_controller_.reset();
   drag_drop_controller_.reset();
   magnification_controller_.reset();
   resize_shadow_controller_.reset();
+  screen_dimmer_.reset();
   shadow_controller_.reset();
   window_cycle_controller_.reset();
   event_client_.reset();
   monitor_controller_.reset();
   tooltip_controller_.reset();
 
   // Launcher widget has a InputMethodBridge that references to
   // input_method_filter_'s input_method_. So explicitly release launcher_
   // before input_method_filter_. And this needs to be after we delete all
   // containers in case there are still live browser windows which access
@@ skipping 132 matching lines @@
   tooltip_controller_.reset(new internal::TooltipController);
   AddRootWindowEventFilter(tooltip_controller_.get());
 
   drag_drop_controller_.reset(new internal::DragDropController);
   magnification_controller_.reset(new internal::MagnificationController);
   power_button_controller_.reset(new PowerButtonController);
   AddShellObserver(power_button_controller_.get());
   video_detector_.reset(new VideoDetector);
   window_cycle_controller_.reset(new WindowCycleController);
   monitor_controller_.reset(new internal::MonitorController);
+  screen_dimmer_.reset(new internal::ScreenDimmer);
 }
 
 aura::Window* Shell::GetContainer(int container_id) {
   return const_cast<aura::Window*>(
       const_cast<const Shell*>(this)->GetContainer(container_id));
 }
 
 const aura::Window* Shell::GetContainer(int container_id) const {
   return GetRootWindow()->GetChildById(container_id);
 }
@@ skipping 174 matching lines @@
     panel_container->SetLayoutManager(panel_layout_manager_);
   }
 }
 
 void Shell::DisableWorkspaceGridLayout() {
   if (workspace_controller_.get())
     workspace_controller_->workspace_manager()->set_grid_size(0);
 }
 
 }  // namespace ash