Bug 1321222 - Remove legacy generator from js/xpconnect/. r=mrbkap

js/xpconnect/tests/chrome/test_bug853571.xul

@@ -21,7 +21,7 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=853571
   SimpleTest.waitForExplicitFinish();
   const Cu = Components.utils;
 
-  function mainTest() {
+  function* mainTest() {
     var iwin = $('ifr').contentWindow;
 
     // Test with a simple sandbox with no prototype.
@@ -46,9 +46,8 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=853571
     target.addEventListener("message", function listener(event) {
       target.removeEventListener("message", listener);
       is(event.source, expectedSource, message);
-      try {
-        gen.next();
-      } catch (e if e instanceof StopIteration) {
+      let {done} = gen.next();
+      if (done) {
         // We're done.
       }
     });

js/xpconnect/tests/mochitest/test_bug505915.html

@@ -18,7 +18,9 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=505915
 <script type="application/javascript;version=1.7">
 
 /** Test for Bug 505915 **/
-window.addEventListener("message", function () { gen.next() }, false);
+window.addEventListener("message", function () {
+  ok(false, "should not receive message");
+}, false);
 
 function go() {
     var ifr = $('ifr');
@@ -36,7 +38,6 @@ function go() {
     }
 
     SimpleTest.finish();
-    yield;
 }
 
 SimpleTest.waitForExplicitFinish();
@@ -44,7 +45,7 @@ SimpleTest.waitForExplicitFinish();
 </script>
 </pre>
 
-<iframe id="ifr" onload="gen = go(); gen.next();" src="http://example.org/"></iframe>
+<iframe id="ifr" onload="go();" src="http://example.org/"></iframe>
 
 </body>
 </html>