1 files changed, 16 insertions, 1 deletions
diff --git a/WebCore/accessibility/AccessibilityRenderObject.h b/WebCore/accessibility/AccessibilityRenderObject.h
index cefaa94..b7b85fe 100644
--- a/WebCore/accessibility/AccessibilityRenderObject.h
+++ b/WebCore/accessibility/AccessibilityRenderObject.h
@@ -311,7 +311,22 @@ private:
     
     mutable AccessibilityRole m_roleForMSAA;
 };
-    
+
+inline AccessibilityRenderObject* toAccessibilityRenderObject(AccessibilityObject* object)
+{
+    ASSERT(!object || object->isAccessibilityRenderObject());
+    return static_cast<AccessibilityRenderObject*>(object);
+}
+
+inline const AccessibilityRenderObject* toAccessibilityRenderObject(const AccessibilityObject* object)
+{
+    ASSERT(!object || object->isAccessibilityRenderObject());
+    return static_cast<const AccessibilityRenderObject*>(object);
+}
+
+// This will catch anyone doing an unnecessary cast.
+void toAccessibilityRenderObject(const AccessibilityRenderObject*);
+
 } // namespace WebCore
 
 #endif // AccessibilityRenderObject_h