[tor-bugs] #29197 [Applications/Tor Launcher]: remove use of overlays from Tor Launcher

[Tor Bug Tracker & Wiki]

#29197: remove use of overlays from Tor Launcher
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     Reporter:  mcs                        |      Owner:  brade
         Type:  defect                     |     Status:  new
     Priority:  Medium                     |  Milestone:
    Component:  Applications/Tor Launcher  |    Version:
     Severity:  Normal                     |   Keywords:
Actual Points:                             |  Parent ID:
       Points:                             |   Reviewer:
      Sponsor:                             |
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 XUL overlay support was removed from Firefox beginning with Firefox 63.
 See https://bugzilla.mozilla.org/show_bug.cgi?id=1449791

 Tor Launcher uses an overlay to allow configuration UI elements to be
 shared between the setup wizard and the Tor Network Settings dialog. We
 will need to replace this with a preprocessor #include strategy or just
 maintain two copies of the XUL.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/29197>
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