Makes ash/mus use RootWindowControllerCommon

ash/common/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_COMMON_SHELL_WINDOW_IDS_H_
 #define ASH_COMMON_SHELL_WINDOW_IDS_H_
 
+#include <stddef.h>
+
+#include "ash/ash_export.h"
+
 // Declarations of ids of special shell windows.
 
 namespace ash {
 
+// Used to indicate no shell window id.
+const int kShellWindowId_Invalid = -1;
+
 // A higher-level container that holds all of the containers stacked below
 // kShellWindowId_LockScreenContainer.  Only used by PowerButtonController for
 // animating lower-level containers.
 const int kShellWindowId_NonLockScreenContainersContainer = 0;
 
 // A higher-level container that holds containers that hold lock-screen
 // windows.  Only used by PowerButtonController for animating lower-level
 // containers.
 const int kShellWindowId_LockScreenContainersContainer = 1;
 
 // A higher-level container that holds containers that hold lock-screen-related
 // windows (which we want to display while the screen is locked; effectively
 // containers stacked above kShellWindowId_LockSystemModalContainer).  Only used
 // by PowerButtonController for animating lower-level containers.
 const int kShellWindowId_LockScreenRelatedContainersContainer = 2;
 
 // A container used for windows of WINDOW_TYPE_CONTROL that have no parent.
 // This container is not visible.
 const int kShellWindowId_UnparentedControlContainer = 3;
 
 // The desktop background window.
 const int kShellWindowId_DesktopBackgroundContainer = 4;
 
 // The virtual keyboard container.
+// NOTE: this is lazily created.
 const int kShellWindowId_VirtualKeyboardContainer = 5;
 
 // The container for standard top-level windows.
 const int kShellWindowId_DefaultContainer = 6;
 
 // The container for top-level windows with the 'always-on-top' flag set.
 const int kShellWindowId_AlwaysOnTopContainer = 7;
 
 // The container for windows docked to either side of the desktop.
 const int kShellWindowId_DockedContainer = 8;
@@ skipping 46 matching lines @@
 
 // ID of the window created by PhantomWindowController or DragWindowController.
 const int 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;
 
+const int kShellWindowId_Min = 0;
+const int kShellWindowId_Max = kShellWindowId_PowerButtonAnimationContainer;
+
+// These are the list of container ids of containers which may contain windows
+// that need to be activated.
+ASH_EXPORT extern const int kActivatableShellWindowIds[];
+ASH_EXPORT extern const size_t kNumActivatableShellWindowIds;
+
 }  // namespace ash
 
 #endif  // ASH_COMMON_SHELL_WINDOW_IDS_H_