Bug 1536284 - Bug 1536278, 1536369 - disable various tests in marionette test suites tha fail for windows10-aarch64 r=jmaher,whimboo

Several tests in marionette are failing in `Mn`, `MnH`, `MG` for windows10-aarch64.

This patch disables the tests that are failing.

Individual issues are recorded in:
- 1536278
- 1536369

Differential Revision: https://phabricator.services.mozilla.com/D23991

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

gfx/tests/marionette/test_pref_rollout_workaround.py

@@ -3,6 +3,9 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
+import platform
+from unittest import skipIf
+
 from marionette_driver.by import By
 from marionette_harness.marionette_test import MarionetteTestCase
 
@@ -59,7 +62,7 @@ class WrPrefRolloutWorkAroundTestCase(MarionetteTestCase):
         self.assertEqual(status, 'opt-in', 'WR rollback of rollout should revert to opt-in on non-qualifying hardware.')
         self.assertTrue(compositor != 'webrender', 'After roll back on non-qualifying HW, WR should not be used.')
 
-
+    @skipIf(platform.machine() == "ARM64" and platform.system() == "Windows", "Bug 1536369 - Crashes on Windows 10 aarch64")
     def test_wr_rollout_workaround_on_qualifying_hw(self):
         # Override the gfxPref so that WR is not enabled, as it would be before a rollout.
         self.marionette.set_pref(pref=gfx_rollout_override, value=False)

layout/base/tests/marionette/manifest.ini

@@ -1,5 +1,5 @@
 [DEFAULT]
 run-if = buildapp == 'browser'
-
+skip-if = (os == "win" && processor == "aarch64") # aarch64 due to 1536278
 [test_accessiblecaret_cursor_mode.py]
 [test_accessiblecaret_selection_mode.py]