Bug 1766238 - Stop using the target argument for ChromeUtils.import in caps tests. r=bholley

Depends on D144559

Differential Revision: https://phabricator.services.mozilla.com/D144560

caps/tests/mochitest/test_addonMayLoad.html

@@ -12,7 +12,8 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=1180921
   <script type="application/javascript">
 
   /** Test for Bug 1180921 **/
-  let module = Cu.getGlobalForObject(ChromeUtils.import("resource://gre/modules/Services.jsm", window));
+  let { Services } = ChromeUtils.import("resource://gre/modules/Services.jsm");
+  let module = Cu.getGlobalForObject(Services);
   let ssm = Services.scriptSecurityManager;
 
   function StubPolicy(id, subdomain) {