Enable FP reporting for fullscreen violations.

This queues a report through the Reporting API whenever
[webkit]RequestFullscreen is called from a frame in which fullscreen is
not allowed according to feature policy. Checking
[webkit]fullscreenAllowed does not trigger reports.

Bug: 867471
Change-Id: I4e7077aea66246d712e549b79b6154c1a596d74c
Reviewed-on: https://chromium-review.googlesource.com/1191482
Commit-Queue: Ian Clelland <iclelland@chromium.org>
Reviewed-by: Philip Jägenstedt <foolip@chromium.org>
Cr-Commit-Position: refs/heads/master@{#587109}
3 files changed