Fixing 1-point jump upon switching from DragView to drag shadow.

Upon the end if the growth animation for DragView, we hide DragView and
show the framework DND drag shadow. Rounding problems caused shifting of the
drag image by 1 pixel when the transition happened.

Bug: 22028725
Change-Id: I2a2275a6d18c1a10ceecaecf8a279c6d11d8c7d8
1 file changed