From the latest rounds of spec discussion, and to match the explainer doc, Feature Policy should be handling several different iframe attributes:
allowfullscreen
allowpaymentrequest
allowusermedia
allow
allowvr?
featurepolicy?
All of these eventually translate into a set of declared whitelists, which should replace the declared whitelists in the parent document, for the appropriate features, for the purpose of calculating the inherited policy for the nested frame.
This task is to create the mechanism to do that replacement. Subtasks will be created for the individual attributes.
Comment 1 by iclell...@chromium.org
, Jan 18 2017