CrOS Tablet Window management - Split Screen part I

ash/wm/overview/overview_animation_type.h

Index: ash/wm/overview/overview_animation_type.h
diff --git a/ash/wm/overview/overview_animation_type.h b/ash/wm/overview/overview_animation_type.h
index 089277e640e644502f058b4cc7dd15a28efa4c32..429ddb9a8f7fe474b6a0af770cba891c33d9ef11 100644
--- a/ash/wm/overview/overview_animation_type.h
+++ b/ash/wm/overview/overview_animation_type.h
@@ -27,7 +27,10 @@ enum OverviewAnimationType {
   OVERVIEW_ANIMATION_CLOSING_SELECTOR_ITEM,
   // Used to animate hiding of a window that is closed while overview mode is
   // active.
-  OVERVIEW_ANIMATION_CLOSE_SELECTOR_ITEM
+  OVERVIEW_ANIMATION_CLOSE_SELECTOR_ITEM,
+  // Used to animate scaling up of a window that is about the get dragged while
+  // overview mode is active.
+  OVERVIEW_ANIMATION_DRAGGING_SELECTOR_ITEM,
 };
 
 }  // namespace ash