[tor-bugs] #21431 [Applications/Tor Browser]: Clean-up system extensions shipped in Firefox 52

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#21431: Clean-up system extensions shipped in Firefox 52
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 Reporter:  gk                              |          Owner:  tbb-team
     Type:  task                            |         Status:  new
 Priority:  Medium                          |      Milestone:
Component:  Applications/Tor Browser        |        Version:
 Severity:  Normal                          |     Resolution:
 Keywords:  ff52-esr, TorBrowserTeam201702  |  Actual Points:
Parent ID:                                  |         Points:
 Reviewer:                                  |        Sponsor:
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Comment (by mcs):

 Based on our research, Kathy and I think the only system extension we
 should consider shipping with Tor Browser is pdfjs (we did not review
 recent changes to pdfjs).

 For e10s, we will probably enable it for everyone or no one. For disabling
 of SHA-1 signatures, we already have the fix for #18042. The remaining
 system add-ons don't seem necessary.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21431#comment:4>
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