Bug 1484927 - [marionette] Temporary skip TestBackForwardNavigation.test_data_urls. r=webdriver-reviewers,ato

Maybe this test causes crashes of Firefox in [@ mozilla::ShutdownXPCOM(nsIServiceManager*)].
Due to the low intermittent rate lets get it temporarily disabled for further investigation
by next week.

Differential Revision: https://phabricator.services.mozilla.com/D47233

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

testing/marionette/harness/marionette_harness/tests/unit/test_navigation.py

@@ -15,6 +15,7 @@ from marionette_harness import (
     MarionetteTestCase,
     run_if_e10s,
     run_if_manage_instance,
+    skip,
     WindowManagerMixin,
 )
 
@@ -409,6 +410,7 @@ class TestBackForwardNavigation(BaseNavigationTestCase):
 
         self.run_bfcache_test(test_pages)
 
+    @skip("Bug 1484927: Maybe causes crash in [@ mozilla::ShutdownXPCOM(nsIServiceManager*)]")
     def test_data_urls(self):
         test_pages = [
             {"url": inline("<p>foobar</p>")},