[tor-bugs] #23805 [Applications/Tor Browser]: Disable dom.enable_performance_navigation_timing in ESR 60

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#23805: Disable dom.enable_performance_navigation_timing in ESR 60
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 Reporter:  tom                       |          Owner:  tbb-team
     Type:  defect                    |         Status:  new
 Priority:  Medium                    |      Milestone:
Component:  Applications/Tor Browser  |        Version:
 Severity:  Normal                    |     Resolution:
 Keywords:  ff60-esr                  |  Actual Points:
Parent ID:                            |         Points:
 Reviewer:                            |        Sponsor:
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Comment (by mcs):

 I have not done any tests, but my reading of the code says that
 `dom.enable_performance` does not disable everything. Therefore, we should
 set `dom.enable_performance_navigation_timing` to `false`.

 The same goes for `dom.enable_performance_observer`, although we may want
 a separate ticket for that one.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/23805#comment:4>
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