Wrap measurement optimization in targetSdk check

A measurement optimization has exposed some apps that are relying
on incidental layout requests to have themselves update. With the
optimization enabled, these apps break.

Apps targetted at older versions of Android should not
break due to this optimization.

bug:11192311
Change-Id: Id5fc7f83ec2cb1541d3d0d16f951cd57c0afaccd
1 file changed