Bug 1580565 - Disable test_classify_by_default.html if fission r=mccr8,egao

Differential Revision: https://phabricator.services.mozilla.com/D45824

--HG--
extra : moz-landing-system : lando

toolkit/components/url-classifier/tests/mochitest/mochitest.ini

@@ -41,6 +41,7 @@ skip-if = (os == 'linux' && debug) #Bug 1199778
 [test_classifier_match.html]
 [test_classifier_worker.html]
 [test_classify_by_default.html]
+skip-if = fission # Crashes intermittently: @ mozilla::dom::BrowsingContext::CreateFromIPC(mozilla::dom::BrowsingContext::IPCInitializer&&, mozilla::dom::BrowsingContextGroup*, mozilla::dom::ContentParent*)
 [test_classify_ping.html]
 skip-if = (verify && debug && (os == 'win' || os == 'mac'))
 [test_classify_track.html]