Animating the drag view scale up and down when dragging items.

Change-Id: Ic97d74a14964c6bdc23305b2d378b13a1f2e3664

src/com/android/launcher2/DropTarget.java

@@ -55,6 +55,9 @@ public interface DropTarget {
         /** Indicates that the drag operation was cancelled */
         public boolean cancelled = false;
 
+        /** Defers removing the DragView from the DragLayer until after the drop animation. */
+        public boolean deferDragViewCleanupPostAnimation = true;
+
         public DragObject() {
         }
     }