[tbb-bugs] #30304 [Applications/Tor Browser]: Browser locale can be obtained via DTD strings

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#30304: Browser locale can be obtained via DTD strings
-------------------------------------------------+-------------------------
 Reporter:  acat                                 |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:
                                                 |  needs_revision
 Priority:  High                                 |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  ff68-esr, tbb-fingerprinting-        |  Actual Points:
  locale, TorBrowserTeam201906                   |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by acat):

 We can backport https://hg.mozilla.org/mozilla-central/rev/3b5afc9aa309
 and https://hg.mozilla.org/mozilla-central/rev/9276e88ea3fe for this. Note
 that the hack for Android/Desktop duplicated translations
 (https://github.com/acatarineu/tor-
 browser/commit/6647e87dc1ed59c5b39e8618bf8753d1d8423343) will have to be
 adapted after this (we need `parser.forceEnableDTD();`)

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30304#comment:12>
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