Separated alt-tab window cycle from overview mode

ash/wm/overview/window_selector_controller.h

Index: ash/wm/overview/window_selector_controller.h
diff --git a/ash/wm/overview/window_selector_controller.h b/ash/wm/overview/window_selector_controller.h
index 18104f8c0336c85dac25dd23cfaaedc99a4003af..1152c1e782ccc3ab2a853c76e4e95df31560fb05 100644
--- a/ash/wm/overview/window_selector_controller.h
+++ b/ash/wm/overview/window_selector_controller.h
@@ -41,11 +41,6 @@ class ASH_EXPORT WindowSelectorController
   // or touch rather than keypresses.
   void ToggleOverview();
 
-  // Cycles between windows in the given |direction|. It is assumed that the
-  // alt key is held down and a key filter is installed to watch for alt being
-  // released.
-  void HandleCycleWindow(WindowSelector::Direction direction);
-
   // Returns true if window selection mode is active.
   bool IsSelecting();