Add a NOT_DRAWN window in between the root_window and its children.

ash/public/cpp/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_PUBLIC_CPP_SHELL_WINDOW_IDS_H_
 #define ASH_PUBLIC_CPP_SHELL_WINDOW_IDS_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 87 matching lines @@
 
 // ID of the window created by PhantomWindowController or DragWindowController.
 const int32_t kShellWindowId_PhantomWindow = 22;
 
 // The container for mouse cursor.
 const int32_t kShellWindowId_MouseCursorContainer = 23;
 
 // The topmost container, used for power off animation.
 const int32_t kShellWindowId_PowerButtonAnimationContainer = 24;
 
+// The delegate root container in between root window and its children, used for
+// screen rotation animation.
+const int32_t kShellWindowId_DelegateRootContainer = 25;
+
 const int32_t kShellWindowId_Min = 0;
 const int32_t kShellWindowId_Max = kShellWindowId_PowerButtonAnimationContainer;
 
 // A list of all the above valid container IDs. Add any new ID to this list.
 // This list is needed to validate we have no duplicate IDs.
 const int32_t kAllShellContainerIds[] = {
-  kShellWindowId_NonLockScreenContainersContainer,
-  kShellWindowId_LockScreenContainersContainer,
-  kShellWindowId_LockScreenRelatedContainersContainer,
-  kShellWindowId_UnparentedControlContainer,
-  kShellWindowId_WallpaperContainer,
-  kShellWindowId_VirtualKeyboardContainer,
-  kShellWindowId_DefaultContainer,
-  kShellWindowId_AlwaysOnTopContainer,
-  kShellWindowId_ShelfContainer,
-  kShellWindowId_ShelfBubbleContainer,
-  kShellWindowId_PanelContainer,
-  kShellWindowId_AppListContainer,
-  kShellWindowId_SystemModalContainer,
-  kShellWindowId_LockScreenWallpaperContainer,
-  kShellWindowId_LockScreenContainer,
-  kShellWindowId_LockSystemModalContainer,
-  kShellWindowId_StatusContainer,
-  kShellWindowId_ImeWindowParentContainer,
-  kShellWindowId_MenuContainer,
-  kShellWindowId_DragImageAndTooltipContainer,
-  kShellWindowId_SettingBubbleContainer,
-  kShellWindowId_OverlayContainer,
-  kShellWindowId_PhantomWindow,
-  kShellWindowId_MouseCursorContainer,
-  kShellWindowId_PowerButtonAnimationContainer,
+    kShellWindowId_NonLockScreenContainersContainer,
+    kShellWindowId_LockScreenContainersContainer,
+    kShellWindowId_LockScreenRelatedContainersContainer,
+    kShellWindowId_UnparentedControlContainer,
+    kShellWindowId_WallpaperContainer,
+    kShellWindowId_VirtualKeyboardContainer,
+    kShellWindowId_DefaultContainer,
+    kShellWindowId_AlwaysOnTopContainer,
+    kShellWindowId_ShelfContainer,
+    kShellWindowId_ShelfBubbleContainer,
+    kShellWindowId_PanelContainer,
+    kShellWindowId_AppListContainer,
+    kShellWindowId_SystemModalContainer,
+    kShellWindowId_LockScreenWallpaperContainer,
+    kShellWindowId_LockScreenContainer,
+    kShellWindowId_LockSystemModalContainer,
+    kShellWindowId_StatusContainer,
+    kShellWindowId_ImeWindowParentContainer,
+    kShellWindowId_MenuContainer,
+    kShellWindowId_DragImageAndTooltipContainer,
+    kShellWindowId_SettingBubbleContainer,
+    kShellWindowId_OverlayContainer,
+    kShellWindowId_PhantomWindow,
+    kShellWindowId_MouseCursorContainer,
+    kShellWindowId_PowerButtonAnimationContainer,
+    kShellWindowId_DelegateRootContainer,
 };
 
 // These are the list of container ids of containers which may contain windows
 // that need to be activated.
 ASH_PUBLIC_EXPORT extern const int32_t kActivatableShellWindowIds[];
 ASH_PUBLIC_EXPORT extern const size_t kNumActivatableShellWindowIds;
 
 // Returns true if |id| is in |kActivatableShellWindowIds|.
 ASH_PUBLIC_EXPORT bool IsActivatableShellWindowId(int32_t id);
 
 }  // namespace ash
 
 #endif  // ASH_PUBLIC_CPP_SHELL_WINDOW_IDS_H_