[tor-bugs] #22614 [Applications/Tor Browser]: Make e10s/non-e10s Tor Browsers indistinguishable

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#22614: Make e10s/non-e10s Tor Browsers indistinguishable
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 Reporter:  cypherpunks                          |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:
                                                 |  needs_review
 Priority:  Medium                               |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  ff52-esr, tbb-fingerprinting,        |  Actual Points:
  TorBrowserTeam201802R                          |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by mcs):

 r=mcs
 The patch looks good to me and it seems to work. I tested it on macOS and,
 with or without e10s enabled, calling `window.showModalDialog()` generates
 a `TypeError: window.showModalDialog is not a function` exception.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22614#comment:8>
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