Add a method to enable ChromeVox Next easily for the current run.

chrome/browser/resources/chromeos/chromevox/cvox2/background/background.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.
 
 /**
  * @fileoverview The entry point for all ChromeVox2 related code for the
  * background page.
  */
 
 goog.provide('Background');
@@ skipping 59 matching lines @@
     textSelectionChanged: this.onTextOrTextSelectionChanged,
     valueChanged: this.onValueChanged
   };
 
   // Register listeners for ...
   // Desktop.
   chrome.automation.getDesktop(this.onGotDesktop);
 };
 
 Background.prototype = {
+  /** Forces ChromeVox Next to be active for all tabs. */
+  forceChromeVoxNextActive: function() {
+    this.active_ = true;
+  },
+
   /**
    * Handles all setup once a new automation tree appears.
    * @param {chrome.automation.AutomationNode} desktop
    */
   onGotDesktop: function(desktop) {
     // Register all automation event listeners.
     for (var eventType in this.listeners_)
       desktop.addEventListener(eventType, this.listeners_[eventType], true);
 
     // Register a tree change observer.
@@ skipping 151 matching lines @@
     new Output().withSpeechAndBraille(
             this.currentRange_, prevRange, evt.type)
         .go();
   },
 
   /**
    * Provides all feedback once a load complete event fires.
    * @param {Object} evt
    */
   onLoadComplete: function(evt) {
-    var next = this.isWhitelisted_(evt.target.attributes.url);
+    var next = this.isWhitelisted_(evt.target.attributes.url) || this.active_;
     this.toggleChromeVoxVersion({next: next, classic: !next});
     // Don't process nodes inside of web content if ChromeVox Next is inactive.
     if (evt.target.root.role != chrome.automation.RoleType.desktop &&
         !this.active_)
       return;
 
     if (this.currentRange_)
       return;
 
     var root = evt.target;
@@ skipping 173 matching lines @@
         }.bind(this));
       }
     }.bind(this));
   }
 };
 
 /** @type {Background} */
 global.backgroundObj = new Background();
 
 });  // goog.scope