tree f2509c60558c16846c1155725ded9b062edf1708
parent 2f065974a65c2d88ee2b3197aa9e0de09437e811
author Ian Kilpatrick <ikilpatrick@chromium.org> 1594690474 -0700
committer Blink WPT Bot <blink-w3c-test-autoroller@chromium.org> 1594691647 -0700

[LayoutNG] Move relative position calculation into NG.

This patch moves the relative position calculation into NG. Previously
we needed to manually account for the relative position of an object
in many different places, overflow calculation, geometry APIs etc.

This patch directly updates the child's offset (relative to its parent)
to directly incorporate this additional offset.

This calculation occurs within the NGBoxFragmentBuilder, and if an
object is *placed* by LayoutNG...
...LayoutBoxModelObject::RelativePositionOffset returns an empty offset.

This fixes a few small issues where previously we didn't resolve
percentages against the correct available size when contained within
an anonymous block.

Bug: 1070822, 1058690
Change-Id: I2c623b02cc5a4605d310596f5c60353a21236bff
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2214608
Commit-Queue: Ian Kilpatrick <ikilpatrick@chromium.org>
Reviewed-by: Xianzhu Wang <wangxianzhu@chromium.org>
Reviewed-by: Morten Stenshorne <mstensho@chromium.org>
Reviewed-by: Koji Ishii <kojii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#787991}