Reland #2: Ensure WebView notifies desktop automation on creation, destruction, and change Original

chrome/browser/resources/chromeos/chromevox/testing/chromevox_next_e2e_test_base.js

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Include test fixture.
 GEN_INCLUDE(['chrome/browser/resources/chromeos/chromevox/testing/' +
     'chromevox_e2e_test_base.js']);
 
 /**
  * Base test fixture for ChromeVox Next end to end tests.
@@ skipping 11 matching lines @@
   /**
    * This method is called without |this| bound to an instance of
    * ChromeVoxNextE2ETest.
    * @override
    */
   testGenCppIncludes: function() {
     ChromeVoxE2ETest.prototype.testGenCppIncludes.call(this);
     GEN('#include "base/command_line.h"');
   },
 
-  runWithAutomation: function(doc, callback) {
-    this.runWithDocument(doc, function() {
-      chrome.automation.getTree(function(root) {
-        callback(root);
-      }.bind(this));
+  /**
+   * Launches a new tab with the given document, and runs callback when a load
+   * complete fires.
+   * @param {function() : void} doc Snippet wrapped inside of a function.
+   * @param {function()} opt_callback Called once the document is ready.
+   */
+  runWithLoadedTree: function(doc, callback) {
+    chrome.automation.getDesktop(function(r) {
+      function callbackInternal(evt) {
+        r.removeEventListener(callbackInternal);
+        callback(evt.target);
+      }
+      r.addEventListener('loadComplete', callbackInternal, true);
+      this.runWithTab(doc);
     }.bind(this));
   }
 };