Evening-out of layer destination coords causes a noticeable up & down
shift in the screen when video layer drawing switches between Overlay
and GPU. This is most easily observed during video playback or pause,
when a UI layer (like Menu) is displayed / hidden. Remove evening-out
of layer destination coords to fix the video layer "twitching" issue.
Change-Id: I3f43b53a7609c9ad8cc983c353fba6dc97460158
CRs-fixed: 348856 350073