AX checked state changes

chrome/common/extensions/api/automation.idl

 // 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.
 
 // The <code>chrome.automation</code> API allows developers to access the
 // automation (accessibility) tree for the browser. The tree resembles the DOM
 // tree, but only exposes the <em>semantic</em> structure of a page. It can be
 // used to programmatically interact with a page by examining names, roles, and
 // states, listening for events, and performing actions on nodes.
 [nocompile] namespace automation {
@@ skipping 182 matching lines @@
     tooltip,
     video,
     webArea,
     webView,
     window
   };
 
   // Describes characteristics of an $(ref:automation.AutomationNode).
   enum StateType {
     busy,
-    checked,
     collapsed,
     default,
     disabled,
     editable,
     expanded,
     focusable,
     focused,
     haspopup,
     horizontal,
     hovered,
@@ skipping 417 matching lines @@
 
     // The CSS display attribute for this node, if applicable.
     DOMString? display;
 
     // A data url with the contents of this object's image or thumbnail.
     DOMString? imageDataUrl;
 
     // The language code for this subtree.
     DOMString? language;
 
-    // If a checkbox or toggle button is in the mixed state.
-    boolean? buttonMixed;
+    // Tri-state describing checkbox or radio button:
+    // 'false' | 'true' | 'mixed'
+    DOMString? checked;
 
     // The RGBA foreground color of this subtree, as an integer.
     long? color;
 
     // The RGBA background color of this subtree, as an integer.
     long? backgroundColor;
 
     // The RGBA color of an input element whose value is a color.
     long? colorValue;
 
@@ skipping 136 matching lines @@
     // Everything in the tree between the two node/offset pairs gets included
     // in the selection. The anchor is where the user started the selection,
     // while the focus is the point at which the selection gets extended
     // e.g. when dragging with a mouse or using the keyboard. For nodes with
     // the role staticText, the offset gives the character offset within
     // the value where the selection starts or ends, respectively.
     [nocompile] static void setDocumentSelection(
         SetDocumentSelectionParams params);
   };
 };