[tor-bugs] #19719 [Applications/Tor Browser]: plugin prompt not displayed if no plugins available

[Tor Bug Tracker & Wiki]

#19719: plugin prompt not displayed if no plugins available
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     Reporter:  mcs                       |      Owner:  tbb-team
         Type:  defect                    |     Status:  new
     Priority:  Medium                    |  Milestone:
    Component:  Applications/Tor Browser  |    Version:
     Severity:  Normal                    |   Keywords:
Actual Points:                            |  Parent ID:
       Points:                            |   Reviewer:
      Sponsor:                            |
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 If no plugins are available on the user's system, the "Are you sure you
 want to enable plugins?" prompt is not displayed. This is because the
 prompt is triggered by an "xpcom-category-entry-added" notification but no
 such notification is generated if no plugins are loaded.

 In this case, we should also consider displaying a different message.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/19719>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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