Don't render top layer elements in non-renderable subtrees #34169
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In [1] we started rendering modal dialog elements even if they were in
non-renderable subtrees. In [2] this was overturned by the other
browsers, so this patch stops rendering them again.
[1] https://bugs.webkit.org/attachment.cgi?id=181812&action=review
[2] b64788f
Fixed: 1301716
Change-Id: I16b7eaf867848d144a7eab743e8ce0af416ce49c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3646687
Commit-Queue: Joey Arhar <jarhar@chromium.org>
Reviewed-by: Mason Freed <masonf@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1016932}