[tor-bugs] #23104 [Applications/Tor Browser]: CSS line-height reveals the platform Tor Browser is running on

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#23104: CSS line-height reveals the platform Tor Browser is running on
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 Reporter:  gk                                   |          Owner:  igt0
     Type:  defect                               |         Status:
                                                 |  needs_review
 Priority:  Medium                               |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tbb-fingerprinting-os,               |  Actual Points:
  TorBrowserTeam201709R                          |
Parent ID:                                       |         Points:
 Reviewer:  gk                                   |        Sponsor:
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Comment (by mcs):

 r=brade, r=mcs
 One suggestion for the test would be to add something like:
  const NORMAL_LINE_HEIGHT_FACTOR = 1.2;
 (and add a comment to refer back to layout/generic/ReflowInput.cpp.

 Also, it seems like it is possible that the tests would fail when the
 anti-fingerprinting pref is turned off, e.g., if the line-height happens
 to really be 1.2x the font-size.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/23104#comment:13>
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