Bug 751406 - Update tests which expect calling Components.classes to fail, a=test-only, DONTBUILD because NPOTB

testing/marionette/client/marionette/tests/unit/test_execute_async_script.py

@@ -98,7 +98,8 @@ class TestExecuteAsyncContent(MarionetteTestCase):
 
     def test_execute_permission(self):
         self.assertRaises(JavascriptException, self.marionette.execute_async_script, """
-var c = Components.classes;
+let prefs = Components.classes["@mozilla.org/preferences-service;1"]
+                              .getService(Components.interfaces.nsIPrefBranch);
 marionetteScriptFinished(1);
 """)
 

testing/marionette/client/marionette/tests/unit/test_execute_script.py

@@ -53,7 +53,10 @@ class TestExecuteContent(MarionetteTestCase):
     def test_execute_permission(self):
         self.assertRaises(JavascriptException,
                           self.marionette.execute_script,
-                          "return Components.classes;")
+                          """
+let prefs = Components.classes["@mozilla.org/preferences-service;1"]
+                              .getService(Components.interfaces.nsIPrefBranch);
+""")
 
     def test_complex_return_values(self):
         self.assertEqual(self.marionette.execute_script("return [1, 2];"), [1, 2])