Adds class, id and src attributes to object attributes of IA2.

content/browser/accessibility/browser_accessibility_win.h

Index: content/browser/accessibility/browser_accessibility_win.h
diff --git a/content/browser/accessibility/browser_accessibility_win.h b/content/browser/accessibility/browser_accessibility_win.h
index c4c92b2902730cb1e7f99397bd7fd9d451d52df6..cf878bf0808494106325b9f66a75f6ba5938151c 100644
--- a/content/browser/accessibility/browser_accessibility_win.h
+++ b/content/browser/accessibility/browser_accessibility_win.h
@@ -838,6 +838,9 @@ BrowserAccessibilityWin
   // or a menu list option with a parent of type menu list popup.
   bool IsListBoxOptionOrMenuListOption();
 
+  // Updates object attributes of IA2 with html attributes.
+  void UpdateRequiredAttributes();
+
   // Windows-specific unique ID (unique within the browser process),
   // used for get_accChild, NotifyWinEvent, and as the unique ID for
   // IAccessible2 and ISimpleDOM.