Keep track of accessibility focus across windows.

ui/accessibility/ax_enums.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.
 
 // These should be kept in sync with third_party/WebKit/public/web/WebAXEnums.h
 // until the Chromium and Blink trees are merged.
 [camel_case_enum_to_string=true] namespace ui {
 
   // For new entries to the following three enums, also add to
   // chrome/common/extensions/api/automation.idl.
@@ skipping 187 matching lines @@
   enum AXState {
     busy,
     checked,
     collapsed,
     default,
     disabled,  // ui/views only
     editable,
     enabled,   // content only
     expanded,
     focusable,
-    focused,
     haspopup,
     horizontal,
     hovered,
     invisible,
     linked,
     multiline,
     multiselectable,
     offscreen,
     pressed,
     protected,
@@ skipping 225 matching lines @@
   };
 
   [cpp_enum_prefix_override="ax"] enum AXDescriptionFrom {
     description_from_uninitialized = 0,
     description_from_attribute,
     description_from_contents,
     description_from_placeholder,
     description_from_related_element
   };
 };