commit 31da4fe3ccb0bf3848c54f4b6523ead2b93b9222
author Ian Kilpatrick <ikilpatrick@chromium.org> Fri Jul 20 04:26:35 2018
committer Commit Bot <commit-bot@chromium.org> Fri Jul 20 04:26:35 2018
tree f121ee4bcf8e3706519c78711ba19fcdf550d1a2
parent 98d34d3f790dbdb27c9570ca0a5663b3969f5132

[LayoutNG] Remove NGConstraintSpace allocation when computing float inline-size.

This shouldn't have any behaviour change. Instead of using the
ComputeInlineSizeForFragment call directly, we optimistically perform layout
on the float to determine this size.

This saves an allocation of an NGConstraintSpace (and simplifies the code
dramatically), which results in a 25% perf increase in some float
benchmarks (see previous pinpoint result).

Cq-Include-Trybots: luci.chromium.try:linux_layout_tests_layout_ng
Change-Id: I111e62a4c16c206473085ebd309719f017196959
Bug: 635619
Reviewed-on: https://chromium-review.googlesource.com/1143882
Commit-Queue: Ian Kilpatrick <ikilpatrick@chromium.org>
Reviewed-by: Koji Ishii <kojii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#576778}