Reland 149510 - Allow filters in accessibility tests to specify which attributes to check.

content/browser/accessibility/browser_accessibility_win.h

Index: content/browser/accessibility/browser_accessibility_win.h
===================================================================
--- content/browser/accessibility/browser_accessibility_win.h	(revision 149572)
+++ content/browser/accessibility/browser_accessibility_win.h	(working copy)
@@ -747,9 +747,14 @@
       REFIID iid,
       void** object);
 
-  // Accessors to IA2 role and state.
-  int32 ia2_role() { return ia2_role_; }
-  int32 ia2_state() { return ia2_state_; }
+  // Accessors.
+  int32 ia_role() const { return ia_role_; }
+  int32 ia_state() const { return ia_state_; }
+  int32 ia2_role() const { return ia2_role_; }
+  int32 ia2_state() const { return ia2_state_; }
+  const std::vector<string16>& ia2_attributes() const {
+    return ia2_attributes_;\
+  }
 
  private:
   // Add one to the reference count and return the same object. Always