Propagate parent_is_ad bit to LocalFrames

Currently there is no way for a LocalFrame to discern if it's remote
parent frame is an ad without asking the browser. When a provisional
frame is set as an ad, also propagate a bit for whether or not its
parent was detected to be an ad.


Bug: 893666
Change-Id: I1d4e05d83348cd7e035541c92a80ae4d7bce1d0d
Reviewed-on: https://chromium-review.googlesource.com/c/1351541
Commit-Queue: John Delaney <johnidel@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: Josh Karlin <jkarlin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#618276}
46 files changed