[tor-bugs] #26146 [Applications/Tor Browser]: Setting `general.useragent.override` does not spoof the platform part anymore in ESR 60 which is confusing

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#26146: Setting `general.useragent.override` does not spoof the platform part
anymore in ESR 60 which is confusing
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 Reporter:  gk                                   |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:  new
 Priority:  Medium                               |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  ff60-esr, tbb-fingerprinting-os,     |  Actual Points:
  tbb-8.0-issues                                 |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by tom):

 I'm sorry - I was wrong about `navigator.userAgent`.  We wanted to test
 with that one reporting the correct platform; and I thought your patch
 would do that - but I was wrong.

 To test with the userAgent DOM property remaining the same, we will also
 need to edit: https://searchfox.org/mozilla-
 central/source/dom/base/Navigator.cpp#1617

 I think the fastest thing to do for testing purposes would be to strip the
 '!nsContentUtils::ShouldResistFingerprinting' guarding the
 'general.useragent.override' pref and then set
 'general.useragent.override' to 'Macintosh; Intel Mac OS X 10.13'

 Sorry =(

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/26146#comment:36>
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