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Bug 1504092 [wpt PR 13847] - [LayoutNG] Cannot re-use line box fragments when scrollbars change., a=testonly 

Automatic update from web-platform-tests[LayoutNG] Cannot re-use line box fragments when scrollbars change.

Without this fix, 3 tests would fail with
https://chromium-review.googlesource.com/c/chromium/src/+/1297367 :

external/wpt/css/vendor-imports/mozilla/mozilla-central-reftests/contain/contain-paint-clip-004.html
fast/overflow/image-selection-highlight.html
scrollbars/overflow-scrollbar-combinations.html

Change-Id: Iabd95ead6c96cd50f25e654dda6a7f041ac77af0
Reviewed-on: https://chromium-review.googlesource.com/c/1311926
Reviewed-by: Koji Ishii <kojii@chromium.org>
Reviewed-by: Christian Biesinger <cbiesinger@chromium.org>
Commit-Queue: Morten Stenshorne <mstensho@chromium.org>
Cr-Commit-Position: refs/heads/master@{#604883}

--

wpt-commits: 415f81733682e4307f2acbda8ff948b73f007ea4
wpt-pr: 13847
This commit is contained in:
Morten Stenshorne 2018-11-09 16:59:02 +00:00 коммит произвёл moz-wptsync-bot
Родитель 141dbc8466
Коммит b93a754b67
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testing/web-platform/tests/css/css-scrollbars/auto-scrollbar-inline-children.html Normal file
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<!DOCTYPE html>
<link rel="author" title="Morten Stenshorne" href="mstensho@chromium.org">
<link rel="help" href="https://www.w3.org/TR/CSS22/visufx.html#propdef-overflow">
<style>
/* Avoid auto scrollbars on the viewport, because that might trigger re-layout
(and thus hide bugs). */
body { overflow:hidden; }
.container { width:100px; }
</style>
<p>There should be a blue rectangle below, and possibly a scrollbar (depending
on OS / browser), that shouldn not obscure any parts of the rectangle. The
word "FAIL" should not be seen.</p>
<div class="container" style="overflow:auto; height:200px;">
<div id="child" style="display:inline-block; box-sizing:border-box; width:100%; height:100%; border:10px solid blue;"></div>
<br>FAIL
</div>
<div class="container" style="visibility:hidden; overflow:scroll;">
<div id="ref"></div>
</div>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
test(()=> {
var child = document.getElementById("child");
assert_equals(child.offsetWidth, ref.offsetWidth);
}, "Auto scrollbar affects size of children");
</script>