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script: Get scroll offsets from layout (#37509)

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No longer store scroll offsets for elements in the DOM. Instead
consistently get and set these in layout's `ScrollTree`. This more
consistently requires layout to run when querying scroll offsets, which
ensures that they are up-to-date and properly bounded by scrollable
overflow area.

Testing: This causes several WPT tests to start passing, and one to
start
failing. In the case of
`/shadow-dom/scroll-to-the-fragment-in-shadow-tree.html`, I believe the
issue
is that we don't properly handle scrolling and shadow DOM elements.
Before, the
faulty scrolling was hiding this issue.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
This commit is contained in:
Martin Robinson 2025-06-20 11:39:12 +02:00 • committed by GitHub
parent 518729a4f5
commit 3774ef00d4
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14 changed files with 116 additions and 117 deletions
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2
tests/wpt/meta/css/css-overflow/incremental-scroll-002.html.ini vendored
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@ -1,2 +0,0 @@
[incremental-scroll-002.html]
expected: TIMEOUT