[tor-bugs] #27290 [Applications/Tor Browser]: WebGL is broken in Tor Browser 8

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#27290: WebGL is broken in Tor Browser 8
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 Reporter:  gk                                   |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:  closed
 Priority:  High                                 |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:  fixed
 Keywords:  ff60-esr, tbb-8.0-issues, tbb-       |  Actual Points:
  regression, TorBrowserTeam201812R, tbb-        |
  backport                                       |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by gk):

 Replying to [comment:12 omg]:
 > Obviously,
 > {{{
 >  pref("webgl.disable-fail-if-major-performance-caveat", true);
 >  pref("webgl.enable-webgl2", false);
 > }}}
 > should be added to Torbutton.

 I agree with the situation being not optimal but I think those prefs
 should not get added to Torbutton. Rather, we should rip out the
 respective Torbutton functions (both
 `torbutton_update_fingerprinting_prefs()` and
 `torbutton_update_isolation_prefs()`) as fingerprinting and linkability
 defenses are not optional. We don't expose those options in the browser UI
 either anymore. I've opened #28746 for that (and #28745 for the parent
 ticket covering the Torbutton clean-up).

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/27290#comment:14>
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