Fixed issue where layers were not always used

Fixed issue where requiresLayer logic was filtering
on the type of stretch behavior when it should no
longer be the case in order to maintain consistent
rendering behavior across stretch behaviors

Fixes: 188923672
Test: Added HWUI StretchEffect test
Change-Id: Ief4f010949b97302bd2d71f26f0f892c8e7f374f
3 files changed