Converts overview to use common ash types

ash/shell_window_ids.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_WINDOW_IDS_H_
 #define ASH_SHELL_WINDOW_IDS_H_
 
 #include "ash/wm/common/wm_shell_window_ids.h"
 
 // Declarations of ids of special shell windows.
@@ skipping 75 matching lines @@
 
 // The container for drag/drop images and tooltips. Defined in
 // wm_shell_window_ids.
 // const int kShellWindowId_DragImageAndTooltipContainer = 20;
 
 // The container for bubbles briefly overlaid onscreen to show settings changes
 // (volume, brightness, input method bubbles, etc.).
 const int kShellWindowId_SettingBubbleContainer = 21;
 
 // The container for special components overlaid onscreen, such as the
-// region selector for partial screenshots.
-const int kShellWindowId_OverlayContainer = 22;
+// region selector for partial screenshots. Defined in wm_shell_window_ids.
+// const int kShellWindowId_OverlayContainer = 22;
 
 // ID of the window created by PhantomWindowController or DragWindowController.
 // Defined in wm_shell_window_ids.
 // kShellWindowId_PhantomWindow = 23;
 
 // The container for mouse cursor.
 const int kShellWindowId_MouseCursorContainer = 24;
 
 // The topmost container, used for power off animation.
 const int kShellWindowId_PowerButtonAnimationContainer = 25;
@@ skipping 65 matching lines @@
                   (kShellWindowId_MenuContainer + 1 ==
                    kShellWindowId_DragImageAndTooltipContainer),
               "app-list between panel and system-modal");
 
 static_assert((kShellWindowId_DragImageAndTooltipContainer - 1 ==
                kShellWindowId_MenuContainer) &&
                   (kShellWindowId_DragImageAndTooltipContainer + 1 ==
                    kShellWindowId_SettingBubbleContainer),
               "drag-image-and-tooltip between menu and settings-bubble");
 
+static_assert((kShellWindowId_OverlayContainer - 1 ==
+               kShellWindowId_SettingBubbleContainer) &&
+                  (kShellWindowId_OverlayContainer + 1 ==
+                   kShellWindowId_PhantomWindow),
+              "overlay between settings-bubble and phantom");
+
 static_assert((kShellWindowId_PhantomWindow - 1 ==
                kShellWindowId_OverlayContainer) &&
                   (kShellWindowId_PhantomWindow + 1 ==
                    kShellWindowId_MouseCursorContainer),
-              "phanton between overlay and mouse-cursor");
+              "phantom between overlay and mouse-cursor");
 
 }  // namespace ash
 
 #endif  // ASH_SHELL_WINDOW_IDS_H_