DOMException toString is not correct

Source/core/dom/ExceptionBase.h

Index: Source/core/dom/ExceptionBase.h
diff --git a/Source/core/dom/ExceptionBase.h b/Source/core/dom/ExceptionBase.h
index d8850ae3149e2347576914e66edd8bada4892a48..d500f1ece497bca3f2415d68554f132ea0a09508 100644
--- a/Source/core/dom/ExceptionBase.h
+++ b/Source/core/dom/ExceptionBase.h
@@ -41,7 +41,7 @@ class ExceptionBase : public RefCounted<ExceptionBase> {
 public:
     unsigned short code() const { return m_code; }
     String name() const { return m_name; }
-    String message() const { return m_message; }
+    String message() const { return description(); }
     String description() const { return m_description; }
 
     String toString() const;
@@ -52,7 +52,6 @@ protected:
 private:
     unsigned short m_code;
     String m_name;
-    String m_message;
     String m_description;
 };