Revert of Added test to check the state of ARIA checkboxes.

Source/modules/accessibility/AXObject.cpp

Index: Source/modules/accessibility/AXObject.cpp
diff --git a/Source/modules/accessibility/AXObject.cpp b/Source/modules/accessibility/AXObject.cpp
index ceb74523b84fea23793723a2671ee7b098ae17fd..2185677552cafc4a1ddf8fcd6c0d33562d30ccd3 100644
--- a/Source/modules/accessibility/AXObject.cpp
+++ b/Source/modules/accessibility/AXObject.cpp
@@ -384,12 +384,8 @@
     const AtomicString& result = getAttribute(aria_checkedAttr);
     if (equalIgnoringCase(result, "true"))
         return ButtonStateOn;
-    if (equalIgnoringCase(result, "mixed")) {
-        AccessibilityRole role = ariaRoleAttribute();
-        if (role == RadioButtonRole || role == MenuItemRadioRole)
-            return ButtonStateOff;
+    if (equalIgnoringCase(result, "mixed"))
         return ButtonStateMixed;
-    }
 
     return ButtonStateOff;
 }