[tor-bugs] #34378 [Applications/Tor Browser]: Port external helper app prompting before opening to Fenix

[Tor Bug Tracker & Wiki]

#34378: Port external helper app prompting before opening to Fenix
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     Reporter:  gk                        |      Owner:  tbb-team
         Type:  task                      |     Status:  new
     Priority:  Medium                    |  Milestone:
    Component:  Applications/Tor Browser  |    Version:
     Severity:  Normal                    |   Keywords:
Actual Points:                            |  Parent ID:  #33661
       Points:                            |   Reviewer:
      Sponsor:  Sponsor58                 |
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 In #26529 we ported the desktop capability to prompt before opening
 external apps to mobile. We need to redo that proxy-bypass-protection part
 for Fenix.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/34378>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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