Enable FP reporting for WebUSB violations.

This queues a report through the Reporting API whenever the WebUSB API
is invoked from a frame in which the 'usb' feature is not allowed
according to feature policy.

Bug: 867471
Change-Id: Ib1b3c70f3d22c0446b8f8cc1dba7d6df3c44d763
Reviewed-on: https://chromium-review.googlesource.com/1191669
Commit-Queue: Ian Clelland <iclelland@chromium.org>
Reviewed-by: Reilly Grant <reillyg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#586762}
3 files changed