Separates out accelerators using non-common types

ash/wm/window_util.h

Index: ash/wm/window_util.h
diff --git a/ash/wm/window_util.h b/ash/wm/window_util.h
index d28e670fc48ec05c15e957a073fe0727f4f2e83a..81a098a92b183530da7371c8953a8e887aacb99e 100644
--- a/ash/wm/window_util.h
+++ b/ash/wm/window_util.h
@@ -46,9 +46,6 @@ ASH_EXPORT aura::Window* GetActivatableWindow(aura::Window* window);
 // Returns true if |window|'s location can be controlled by the user.
 ASH_EXPORT bool IsWindowUserPositionable(aura::Window* window);
 
-// Moves the window to the center of the display.
-ASH_EXPORT void CenterWindow(aura::Window* window);
-
 // Pins the window on top of other windows.
 ASH_EXPORT void PinWindow(aura::Window* window);