Add window overview mode behind --ash-enable-overview-mode flag to F5 key.

ash/shell.h

 // 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.
 
 #ifndef ASH_SHELL_H_
 #define ASH_SHELL_H_
 
 #include <utility>
 #include <vector>
 
@@ skipping 80 matching lines @@
 class ShellDelegate;
 class ShellObserver;
 class SystemTray;
 class SystemTrayDelegate;
 class SystemTrayNotifier;
 class UserActivityDetector;
 class UserWallpaperDelegate;
 class VideoDetector;
 class WebNotificationTray;
 class WindowCycleController;
+class WindowSelectorController;
 
 namespace internal {
 class AcceleratorFilter;
 class ActivationController;
 class AppListController;
 class CaptureController;
 class DisplayChangeObserverX11;
 class DisplayErrorObserver;
 class DisplayManager;
 class DragDropController;
@@ skipping 206 matching lines @@
   }
   UserActivityDetector* user_activity_detector() {
     return user_activity_detector_.get();
   }
   VideoDetector* video_detector() {
     return video_detector_.get();
   }
   WindowCycleController* window_cycle_controller() {
     return window_cycle_controller_.get();
   }
+  WindowSelectorController* window_selector_controller() {
+    return window_selector_controller_.get();
+  }
   internal::FocusCycler* focus_cycler() {
     return focus_cycler_.get();
   }
   DisplayController* display_controller() {
     return display_controller_.get();
   }
   internal::MouseCursorEventFilter* mouse_cursor_filter() {
     return mouse_cursor_filter_.get();
   }
   internal::EventTransformationHandler* event_transformation_handler() {
@@ skipping 209 matching lines @@
   scoped_ptr<views::corewm::WindowModalityController>
       window_modality_controller_;
   scoped_ptr<views::corewm::TooltipController> tooltip_controller_;
   scoped_ptr<DesktopBackgroundController> desktop_background_controller_;
   scoped_ptr<PowerButtonController> power_button_controller_;
   scoped_ptr<LockStateController> lock_state_controller_;
   scoped_ptr<MruWindowTracker> mru_window_tracker_;
   scoped_ptr<UserActivityDetector> user_activity_detector_;
   scoped_ptr<VideoDetector> video_detector_;
   scoped_ptr<WindowCycleController> window_cycle_controller_;
+  scoped_ptr<WindowSelectorController> window_selector_controller_;
   scoped_ptr<internal::FocusCycler> focus_cycler_;
   scoped_ptr<DisplayController> display_controller_;
   scoped_ptr<HighContrastController> high_contrast_controller_;
   scoped_ptr<MagnificationController> magnification_controller_;
   scoped_ptr<PartialMagnificationController> partial_magnification_controller_;
   scoped_ptr<aura::client::FocusClient> focus_client_;
   scoped_ptr<aura::client::UserActionClient> user_action_client_;
   aura::client::ActivationClient* activation_client_;
   scoped_ptr<internal::MouseCursorEventFilter> mouse_cursor_filter_;
   scoped_ptr<internal::ScreenPositionController> screen_position_controller_;
@@ skipping 51 matching lines @@
   bool simulate_modal_window_open_for_testing_;
 
   bool is_touch_hud_projection_enabled_;
 
   DISALLOW_COPY_AND_ASSIGN(Shell);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELL_H_