[tbb-bugs] #22459 [Applications/Tor Browser]: Adapt our use of the nsIContentPolicy to e10s mode

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#22459: Adapt our use of the nsIContentPolicy to e10s mode
-------------------------------------------------+-------------------------
 Reporter:  gk                                   |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:
                                                 |  needs_review
 Priority:  Very High                            |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Major                                |     Resolution:
 Keywords:  ff52-esr, tbb-e10s,                  |  Actual Points:
  TorBrowserTeam201705R, GeorgKoppen201705,      |
  tbb-7.0-must                                   |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by arthuredelstein):

 I built the latest tor-browser.git, applied this patch to torbutton.

 * First I visited https://arthuredelstein.github.io/tordemos/resource-
 locale.html. I could see in the web console that it correctly blocked
 reading the resource:// files.
 * Then I visited https://mdn.github.io/learning-area/html/multimedia-and-
 embedding/video-and-audio-content/simple-video.html and found that the
 video controls are not available and clicking on the video does not cause
 it to play. Reverting the patch from comment:2 restores the video
 controls.

 So it appears something additional needs to be done to activate the
 whitelist? As we're on a tight deadline I will continue to investigate.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22459#comment:3>
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