commit bae50aa7e178c87d6c8030f38cd748048e351ff8
author Aleks Totic <atotic@chromium.org> Mon Jan 14 18:27:18 2019
committer Commit Bot <commit-bot@chromium.org> Mon Jan 14 18:27:18 2019
tree cf8d8e3cf5abb3123b9e43af22e6ec0683344184
parent f176db1aadb6b40f349c2467e50e860ba6c26e46

[LayoutNG] Children ScrollableOverflow applies transforms

Scrollable overflow of container fragments is a union of
children scrollable overflows. If children have transforms,
those transforms should be applied before the union.

Added overflow-abpos-transform.html test case to explicitly
test abspos fragment with transforms.

Bug: 849751
Change-Id: Iaa43ea1617113c658accf2d02bf7574e08a03518
Notry: true
Reviewed-on: https://chromium-review.googlesource.com/c/1406235
Commit-Queue: Aleks Totic <atotic@chromium.org>
Reviewed-by: Morten Stenshorne <mstensho@chromium.org>
Cr-Commit-Position: refs/heads/master@{#622520}