[Bug 1665535] [NEW] WebRTC webcam support broken in firefox due to apparmor

[Jay Hennessey]

Public bug reported:

In order to use sites that make use of WebRTC's webcam support, firefox
needs access to the /dev/videoN device. When I applied the latest
firefox update over the last week, apparmor was set to enforcing mode,
which broke sites that use WebRTC, like https://talky.io.

$ lsb_release -rd
Description:	Ubuntu 16.10
Release:	16.10
$ apt-cache policy firefox
firefox:
  Installed: 51.0.1+build2-0ubuntu0.16.10.2
  Candidate: 51.0.1+build2-0ubuntu0.16.10.2
  Version table:
 *** 51.0.1+build2-0ubuntu0.16.10.2 500
        500 http://us.archive.ubuntu.com/ubuntu yakkety-updates/main amd64 Packages
        500 http://us.archive.ubuntu.com/ubuntu yakkety-security/main amd64 Packages
        100 /var/lib/dpkg/status
     49.0+build4-0ubuntu2 500
        500 http://us.archive.ubuntu.com/ubuntu yakkety/main amd64 Packages

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New

** Package changed: apparmor (Ubuntu) => firefox (Ubuntu)

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Title:
  WebRTC webcam support broken in firefox due to apparmor

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