With APZ enabled, these tests activate scrollframes (by scrolling them) in the
test pages but not the reference pages. This causes differences in layerization
which causes reftests to fail by a few pixel differences in the scrollbars. By
making the scrollboxes will-change:scroll-position both the test and reference
pages have activated scrollframes, and so the layerization is the same in both.
--HG--
extra : commitid : BafhIev6bT
- Updated smooth scroll behavior mochitest and reftests to
match new CSSOM-View DOM scrolling method parameters.
- Added tests for Element.ScrollBy and Element.ScrollTo.