GitLab

If we are changing :empty to match when there are whitespace children,
we need to know to what extent this affects existing content.

Bug: 447880
Change-Id: I53906fe6295f42cdc72d5ca6d6e58e1aa60786c3
Reviewed-on: https://chromium-review.googlesource.com/c/1326003
Commit-Queue: Rune Lillesveen <futhark@chromium.org>
Commit-Queue: Eric Willigers <ericwilligers@chromium.org>
Reviewed-by: Eric Willigers <ericwilligers@chromium.org>
Cr-Commit-Position: refs/heads/master@{#606443}