[tor-bugs] #13019 [Tor Browser]: New locale fingerprinting capabilities in FF31ESR

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#13019: New locale fingerprinting capabilities in FF31ESR
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     Reporter:           |      Owner:  arthuredelstein
  mikeperry              |     Status:  needs_revision
         Type:  defect   |  Milestone:
     Priority:  major    |    Version:
    Component:  Tor      |   Keywords:  ff31-esr, tbb-fingerprinting,
  Browser                |  TorBrowserTeam201503, tbb-4.5-alpha
   Resolution:           |  Parent ID:
Actual Points:           |
       Points:           |
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Comment (by arthuredelstein):

 Mike pointed out that "English_United States.1252" might conceivably be
 unavailable on some Windows machines. So I tried the "C" locale for
 Windows, OSX, and Linux using the latest alpha, and this works for
 `Date().toLocaleFormat()`.

 So here's yet another version, using the "C" locale for setlocale(...).
 Note that the `JS_SetDefaultLocale` call uses "en-US" as before, and
 applies not to `Date()` but to the Intl API calls, such as
 `Intl.Collator().resolvedOptions().locale`.

 https://github.com/arthuredelstein/tor-browser/commits/13019+5

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13019#comment:27>
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