commit d3f723d09a4fa5cfbb0a969b98f25f116f8ada06
author Ian Kilpatrick <ikilpatrick@chromium.org> Wed May 26 17:23:40 2021
committer Chromium LUCI CQ <chromium-scoped@luci-project-accounts.iam.gserviceaccount.com> Wed May 26 17:23:40 2021
tree 1da967491462843193d0e447880ab4ccf3b46e53
parent 5ab5f586d05e2ad08650ef9f261ad22d3b8b1590

[GridNG] Add concept of "explicit"/"implicit" stretching.

Previously on the constraint-space we had a bit which indicates of we
should "stretch" of "shrink-to-fit" if the size in the particular
direction is auto.

This doesn't quite capture all the constraints however. For example:

<div style="display: grid;">
  <div style="aspect-ratio: 1/1; height: 100px;"></div>
</div>

<div style="display: grid;">
  <div style="aspect-ratio: 1/1; justify-self: stretch; height: 100px;"></div>
</div>

In the above example both of the inline sizes are "stretched" however
one is "implicit" (or weak - the default), and one is "explicit" (or
strong).

Various layout modes have different concepts here. Most of the time it
is implicit, however flex layout defaults to "explicit"/"strong".

This fixes the various grid aspect-ratio tests that was failing w/
GridNG enabled, and creates two additional passes:
 - grid-aspect-ratio-018.html
 - grid-aspect-ratio-019.html

Bug: 1045599
Change-Id: Ifb8c4e010e85f53c020545ce077447d1f4312252
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2911763
Commit-Queue: Ian Kilpatrick <ikilpatrick@chromium.org>
Reviewed-by: Kurt Catti-Schmidt <kschmi@microsoft.com>
Reviewed-by: David Grogan <dgrogan@chromium.org>
Reviewed-by: Morten Stenshorne <mstensho@chromium.org>
Cr-Commit-Position: refs/heads/master@{#886786}