GitLab

Integrated PageHints whitelisted optimization checking to the
PreviewsHints::IsWhitelisted() which is used at commit time to
decide what PreviewsState bit to use.

Bug: 871795
Change-Id: Ifa0080a51f9df5ec9aefd4044b563259d0ce4978
TBR: dougarnett@chromiumn.org
Reviewed-on: https://chromium-review.googlesource.com/1176188Reviewed-by: Tarun Bansal <tbansal@chromium.org>
Commit-Queue: Tarun Bansal <tbansal@chromium.org>
Cr-Commit-Position: refs/heads/master@{#583364}