Remove unused HasUniquePseudoStyle.

Change-Id: I5680ea261379f015acc8b69b7436e01b7c094f7c
Reviewed-on: https://chromium-review.googlesource.com/1023412
Reviewed-by: Morten Stenshorne <[email protected]>
Commit-Queue: Rune Lillesveen <[email protected]>
Cr-Commit-Position: refs/heads/master@{#552661}
2 files changed