Improves computation of IAccessible2 Hypertext.

content/browser/accessibility/browser_accessibility_win.h

 // Copyright (c) 2012 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.
 
 #ifndef CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_WIN_H_
 #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_WIN_H_
 
 #include <atlbase.h>
 #include <atlcom.h>
 #include <oleacc.h>
@@ skipping 910 matching lines @@
     // Hypertext.
     base::string16 hypertext;
 
     // Maps each style span to its start offset in hypertext.
     std::map<int, std::vector<base::string16>> offset_to_text_attributes;
 
     // Maps the |hypertext_| embedded character offset to an index in
     // |hyperlinks_|.
     std::map<int32_t, int32_t> hyperlink_offset_to_index;
 
-    // The id of a BrowserAccessibilityWin for each hyperlink.
+    // The unique id of a BrowserAccessibilityWin for each hyperlink.
     // TODO(nektar): Replace object IDs with child indices.

[dmazzoni, 2016/06/07 15:45:54]

Does this todo still apply? Unique ids seem fine

     std::vector<int32_t> hyperlinks;
   };
 
   std::unique_ptr<WinAttributes> win_attributes_;
 
   // Only valid during the scope of a IA2_EVENT_TEXT_REMOVED or
   // IA2_EVENT_TEXT_INSERTED event.
   std::unique_ptr<WinAttributes> old_win_attributes_;
 
   // Relationships between this node and other nodes.
@@ skipping 12 matching lines @@
 
 CONTENT_EXPORT BrowserAccessibilityWin*
 ToBrowserAccessibilityWin(BrowserAccessibility* obj);
 
 CONTENT_EXPORT const BrowserAccessibilityWin*
 ToBrowserAccessibilityWin(const BrowserAccessibility* obj);
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_WIN_H_