Test aria-pressed=mixed on windows

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 198 matching lines @@
     focusable,
     focused,
     haspopup,
     horizontal,
     hovered,
     invisible,
     linked,
     multiline,
     multiselectable,
     offscreen,
-    pressed,
     protected,
     readOnly,
     required,
     richlyEditable,
     selectable,
     selected,
     vertical,
     visited
   };
 
@@ skipping 420 matching lines @@
     // A data url with the contents of this object's image or thumbnail.
     DOMString? imageDataUrl;
 
     // The language code for this subtree.
     DOMString? language;
 
     // Tri-state describing checkbox or radio button:
     // 'false' | 'true' | 'mixed'
     DOMString? checked;
 
+    // Tri-state describing toggle button:
+    // 'false' | 'true' | 'mixed'
+    DOMString? pressed;
+
     // 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 135 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);
   };
 };