GitLab

PreviewsState is used in DataReductionProxyURLLoaderThrottle to set some
chrome-proxy specific headers to serve previews.

Bug: 893728
Change-Id: Ie54f174bb1ba2ff4d77f725c0e64450f8d2aad0c
Reviewed-on: https://chromium-review.googlesource.com/c/1327568Reviewed-by: Charlie Harrison <csharrison@chromium.org>
Commit-Queue: rajendrant <rajendrant@chromium.org>
Cr-Commit-Position: refs/heads/master@{#606661}