Bug 1925134 [wpt PR 48655] - [text-decoration] Fix crashes for multil…

…ine ellipsis with `::first-line`, a=testonly

Automatic update from web-platform-tests
[text-decoration] Fix crashes for multiline ellipsis with `::first-line`

The ellipsis should be styled according to the block[1]. It
was using the first-line style of the block, because it's the
common case, and it's the same style unless `::first-line` is
applied.

This patch changes it to distinguish ellipsis on the first
line from other cases.

Wrong style can cause wrong rendering, but when
`text-decoration` is involved, it can confuse decoration box
calculation and result in crashes. This patch fixes both the
crashes and the correctness.

[1] https://www.w3.org/TR/css-overflow-3/#ellipsing-details

Fixed: 358957652
Change-Id: I26af0ae034876bdc0b0cc114670c52d24e2f36a0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5936973
Commit-Queue: Kent Tamura <tkentchromium.org>
Auto-Submit: Koji Ishii <kojiichromium.org>
Reviewed-by: Kent Tamura <tkentchromium.org>
Cr-Commit-Position: refs/heads/main{#1369664}

--

wpt-commits: 1c795222d59595eadcd348faf86334ae6877224c
wpt-pr: 48655

UltraBlame original commit: 0b00916015c0f7f22be9ad761d572057db9b02fc

testing/web-platform/tests/css/css-ui/crashtests/text-overflow-ellipsis-multiline-crash.html

@@ -0,0 +1,54 @@
+<
+!
+DOCTYPE
+html
+>
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+>
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+{
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+<
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+1234567
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testing/web-platform/tests/css/css-ui/reference/text-overflow-ellipsis-multiline-001-ref.html

@@ -0,0 +1,63 @@
+<
+!
+DOCTYPE
+html
+>
+<
+style
+>
+div
+{
+width
+:
+6ch
+;
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testing/web-platform/tests/css/css-ui/text-overflow-ellipsis-multiline-001.html

@@ -0,0 +1,128 @@
+<
+!
+DOCTYPE
+html
+>
+<
+title
+>
+Test
+multiline
+ellipsis
+with
+:
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+first
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+<
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+multiline
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+001
+-
+ref
+.
+html
+"
+>
+<
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+=
+"
+help
+"
+href
+=
+"
+https
+:
+/
+/
+drafts
+.
+csswg
+.
+org
+/
+css
+-
+ui
+-
+3
+/
+#
+ellipsing
+-
+details
+"
+>
+<
+style
+>
+div
+{
+width
+:
+6ch
+;
+overflow
+:
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+text
+-
+overflow
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+}
+div
+:
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+first
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+line
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+color
+:
+orange
+;
+}
+<
+/
+style
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+<
+div
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+1234567
+<
+br
+>
+1234567
+<
+/
+div
+>