Rip out startup GfxSanityTest entirely
Mozilla understood it's a Windows-only "feature" in FF54 https://bugzilla.mozilla.org/show_bug.cgi?id=1339432, but Tor Browser doesn't need that trash.
Mozilla understood it's a Windows-only "feature" in FF54 https://bugzilla.mozilla.org/show_bug.cgi?id=1339432, but Tor Browser doesn't need that trash.