[tor-bugs] #16300 [Tor Browser]: Make sure the BroadcastChannel API adheres to our URL bar domain isolation

[Tor Bug Tracker & Wiki]

#16300: Make sure the BroadcastChannel API adheres to our URL bar domain isolation
-------------------------+-------------------------------------------------
     Reporter:  gk       |      Owner:  mcs
         Type:  task     |     Status:  needs_review
     Priority:  major    |  Milestone:
    Component:  Tor      |    Version:
  Browser                |   Keywords:  ff38-esr, tbb-linkability, tbb-5
   Resolution:           |  .0a-highrisk, TorBrowserTeam201506R,
Actual Points:           |  GeorgKoppen201506R
       Points:           |  Parent ID:
-------------------------+-------------------------------------------------

Comment (by gk):

 Replying to [comment:5 mcs]:
 > We did disallow use of Broadcast Channels from SharedWorkers when
 isolation is enabled because, as with blob URLs (#15502), there is no good
 way to get at the document or channel.

 This is okay and won't hurt especially as we disable SharedWorkers (we
 have #15564 for the URL bar domain isolation). I am wondering though how
 they determine the origin and whether we have to update our
 ThirdPartyUtils for this then...

 Might need another pair of eyes due to being a C++ patch but I am happy
 with it, thanks!

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16300#comment:9>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online