Add RootWindowController

ash/wm/property_util.h

Index: ash/wm/property_util.h
diff --git a/ash/wm/property_util.h b/ash/wm/property_util.h
index ce0940b8964ef5737c74f7cab5cbb21cd20f0276..1850269d480cd8430ccb3b0e89fc87e60851ec21 100644
--- a/ash/wm/property_util.h
+++ b/ash/wm/property_util.h
@@ -9,6 +9,7 @@
 #include "ash/ash_export.h"
 
 namespace aura {
+class RootWindow;
 class Window;
 }
 
@@ -17,6 +18,9 @@ class Rect;
 }
 
 namespace ash {
+namespace internal {
+class RootWindowController;
+}
 
 // Sets the restore bounds property on |window|. Deletes existing bounds value
 // if exists.
@@ -61,6 +65,13 @@ ASH_EXPORT bool GetPersistsAcrossAllWorkspaces(aura::Window* window);
 // The default is false.
 ASH_EXPORT void SetDefaultPersistsAcrossAllWorkspaces(bool value);
 
+// Sets/Gets the RootWindowController for |root_window|.
+ASH_EXPORT void SetRootWindowController(
+    aura::RootWindow* root_window,
+    internal::RootWindowController* controller);
+ASH_EXPORT internal::RootWindowController* GetRootWindowController(
+    aura::RootWindow* root_window);
+
 }
 
 #endif  // ASH_WM_PROPERTY_UTIL_H_