tree 99578e886d8b4dbb2dda81431443e09465a8192f
parent 016aca0f8606b21284161f2772c461e521ce253b
author Koji Ishii <kojii@chromium.org> 1570551210 -0700
committer Blink WPT Bot <blink-w3c-test-autoroller@chromium.org> 1570553109 -0400

[LayoutNG] Fix line breaking when `font-size: 0`

This patch fixes line breaking when break opportunities have
`font-size: 0`.

`font-size: 0` makes all characters at position 0. This
confuses when |NGLineBreaker| needs to rewind, and tries to
find the break opportunity before the current one.

This patch fixes it by using |PreviousBreakOpportunity| in
such case.

Bug: 1006127
Change-Id: I449d6f8aaba4deccd458c5e077920b1a8bf79305
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1843991
Reviewed-by: Yoshifumi Inoue <yosin@chromium.org>
Reviewed-by: Emil A Eklund <eae@chromium.org>
Commit-Queue: Koji Ishii <kojii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#703753}