Correctly finds line boundaries in objects with rich text on 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 286 matching lines @@
     // What information was used to compute the object's name
     // (of type AXNameFrom).
     name_from,
 
     // What information was used to compute the object's description
     // (of type AXDescriptionFrom).
     description_from,
 
     // Relationships between this element and other elements.
     activedescendant_id,
+    next_on_line_id,
+    previous_on_line_id,
 
     // Identifies a child tree which this node hosts.
     child_tree_id,
 
     // Position or Number of items in current set of listitems or treeitems
     set_size,
     pos_in_set,
 
     // In the case of AX_ROLE_COLOR_WELL, specifies the selected color.
     color_value,
@@ skipping 131 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
   };
 };