forked from mirrors/gecko-dev
f22eecbc74
Automatic update from web-platform-tests Custom layout needs to force NG layout for the subtree. Just like for MathML, custom layout (display:layout()) has no legacy layout engine implementation, so we need to force NG layout, even when contained by something that requires legacy fallback. Rewrote the mechanism somewhat; calling ComputedStyle() on an element isn't the right thing to do within Element::ShouldForceLegacyLayout() (it called ShouldForceNGLayout(), which did that), since ShouldForceLegacyLayout() is involved when style is about to change, or when it has just been changed. ShouldForceLegacyLayout() will now return true even if the display type requires LayoutNG. Cope with this by just not setting ForceLegacyLayout on any NG LayoutObjects at all. And remove a couple of DCHECKs in NG LayoutObject classes that expected legacy fallback not to be in use on the Element side. This is rather convoluted. :( Also update HTMLSlotElement::AttachLayoutTree(), which recently got modified to support legacy fallback properly. This fixes one of three DCHECK failures that occur in the fuzzer test in bug 1127112. Bug: 1127112 Change-Id: I16b5f5297cb04192056f6c5137c2cefa1bc33298 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2414289 Reviewed-by: Rune Lillesveen <futhark@chromium.org> Reviewed-by: Frédéric Wang <fwang@igalia.com> Reviewed-by: Ian Kilpatrick <ikilpatrick@chromium.org> Commit-Queue: Morten Stenshorne <mstensho@chromium.org> Cr-Commit-Position: refs/heads/master@{#808311} -- wpt-commits: 4811c33c5a6bc404ccbf334fca80d316bb3d916b wpt-pr: 25575
8 lines
292 B
HTML
8 lines
292 B
HTML
<!DOCTYPE html>
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<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
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<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=1127112#c7">
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<div style="columns:16;">
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<div style="display:layout(child-layout);">
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<div></div>
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</div>
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</div>
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