Complete live region support in ChromeVox Next.

chrome/renderer/resources/extensions/automation_custom_bindings.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.
 
 // Custom bindings for the automation API.
 var AutomationNode = require('automationNode').AutomationNode;
 var AutomationRootNode = require('automationNode').AutomationRootNode;
 var automation = require('binding').Binding.create('automation');
 var automationInternal =
     require('binding').Binding.create('automationInternal').generate();
 var eventBindings = require('event_bindings');
 var Event = eventBindings.Event;
 var exceptionHandler = require('uncaught_exception_handler');
 var forEach = require('utils').forEach;
 var lastError = require('lastError');
 var logging = requireNative('logging');
 var nativeAutomationInternal = requireNative('automationInternal');
 var GetRoutingID = nativeAutomationInternal.GetRoutingID;
 var GetSchemaAdditions = nativeAutomationInternal.GetSchemaAdditions;
 var DestroyAccessibilityTree =
     nativeAutomationInternal.DestroyAccessibilityTree;
 var GetIntAttribute = nativeAutomationInternal.GetIntAttribute;
 var StartCachingAccessibilityTrees =
     nativeAutomationInternal.StartCachingAccessibilityTrees;
+var SetTreeChangeObserverMask =
+    nativeAutomationInternal.SetTreeChangeObserverMask;
 var schema = GetSchemaAdditions();
 
 /**
  * A namespace to export utility functions to other files in automation.
  */
 window.automationUtil = function() {};
 
 // TODO(aboxhall): Look into using WeakMap
 var idToCallback = {};
 
@@ skipping 86 matching lines @@
   });
 
   function addTreeChangeObserver(observer) {
     removeTreeChangeObserver(observer);
     automationUtil.treeChangeObservers.push(observer);
   }
   apiFunctions.setHandleRequest('addTreeChangeObserver', function(observer) {
     addTreeChangeObserver(observer);
   });
 
+  function setTreeChangeObserverMask(mask) {
+    SetTreeChangeObserverMask(mask);
+  }
+  apiFunctions.setHandleRequest('setTreeChangeObserverMask',
+      function(mask) {
+        setTreeChangeObserverMask(mask);
+      });
+
   apiFunctions.setHandleRequest('setDocumentSelection', function(params) {
     var anchorNodeImpl = privates(params.anchorObject).impl;
     var focusNodeImpl = privates(params.focusObject).impl;
     if (anchorNodeImpl.treeID !== focusNodeImpl.treeID)
       throw new Error('Selection anchor and focus must be in the same tree.');
     if (anchorNodeImpl.treeID === DESKTOP_TREE_ID) {
       throw new Error('Use AutomationNode.setSelection to set the selection ' +
           'in the desktop tree.');
     }
     automationInternal.performAction({ treeID: anchorNodeImpl.treeID,
@@ skipping 110 matching lines @@
 });
 
 exports.binding = automation.generate();
 
 // Add additional accessibility bindings not specified in the automation IDL.
 // Accessibility and automation share some APIs (see
 // ui/accessibility/ax_enums.idl).
 forEach(schema, function(k, v) {
   exports.binding[k] = v;
 });