Turn Browser Context Menu Async

chrome/browser/resources/chromeos/chromevox/cvox2/background/background_test.extjs

Index: chrome/browser/resources/chromeos/chromevox/cvox2/background/background_test.extjs
diff --git a/chrome/browser/resources/chromeos/chromevox/cvox2/background/background_test.extjs b/chrome/browser/resources/chromeos/chromevox/cvox2/background/background_test.extjs
index 19dde92b495c6fa3627c195e282d2777d8b6a7e3..e2aa0efc97a1fa69fd39176fbdf801145fa61048 100644
--- a/chrome/browser/resources/chromeos/chromevox/cvox2/background/background_test.extjs
+++ b/chrome/browser/resources/chromeos/chromevox/cvox2/background/background_test.extjs
@@ -276,20 +276,14 @@ TEST_F('BackgroundTest', 'ShowContextMenu', function() {
   var mockFeedback = this.createMockFeedback();
   this.runWithLoadedTree('<p>before</p><a href="a">a</a>',
     function(rootNode) {
-      mockFeedback.expectSpeech(/menu opened/)
-          .call(function() {
-            // When shown, the context menu pushes a new message loop so test
-            // messages sent to the browser do not get processed. Ensure we
-            // exit the context menu here.
-            go.showContextMenu();
-          });
-      mockFeedback.replay();
-
       var go = rootNode.find({ role: RoleType.link });
-      this.listenOnce(go, 'focus', function(e) {
-        doCmd('contextMenu')();
-      }.bind(this), true);
-      go.focus();
+      // Menus no longer nest a message loop, so we can launch menu and confirm
+      // expected speech. The menu will not block test shutdown.
+      mockFeedback.call(go.focus.bind(go))
+          .expectSpeech('a', 'Link')
+          .call(doCmd('contextMenu'))
+          .expectSpeech(/menu opened/);
+      mockFeedback.replay();
     }.bind(this));
 });