Bug 1620091: Disable remote extension mochitests on Android; r=mixedpuppy

Even though e10s is turned on in GeckoView, we do not yet support the extension
process; we should skip these tests in that case.

Differential Revision: https://phabricator.services.mozilla.com/D65418

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

toolkit/components/extensions/test/mochitest/mochitest-remote.ini

@@ -1,6 +1,6 @@
 [DEFAULT]
 tags = webextensions remote-webextensions
-skip-if = !e10s
+skip-if = !e10s || (os == 'android') # Bug 1620091: disable on android until extension process is done
 prefs =
     extensions.webextensions.remote=true