[tor-bugs] #34125 [Applications/Tor Browser]: Fix torbutton proxy api due to change in Firefox 77.

[Tor Bug Tracker & Wiki]

#34125: Fix torbutton proxy api due to change in Firefox 77.
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 Reporter:  acat                                 |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:
                                                 |  needs_review
 Priority:  Medium                               |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  ff78-esr tbb-torbutton,              |  Actual Points:
  TorBrowserTeam202005R                          |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by gk):

 Replying to [comment:2 mcs]:
 > The patch looks good.
 > Of course this change is not compatible with older Firefox code, e.g.,
 ESR68. Are there plans to create maintenance branches for Torbutton, Tor
 Launcher, etc. where this and similar changes will not be merged? Or maybe
 maintenance branches already exist?

 They don't exist yet, but, yes, we need to create those branches once we
 have all the pieces in place (as we did in the past)

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/34125#comment:4>
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