Amusingly deprecate the generic version of 'ExceptionState::throwDOMException'.

Source/bindings/v8/ExceptionState.h

Index: Source/bindings/v8/ExceptionState.h
diff --git a/Source/bindings/v8/ExceptionState.h b/Source/bindings/v8/ExceptionState.h
index 0642a0aa6fff8b8a48233811a048a4217cf1fc0a..26bae40f6941d8cc7c6524bd98e339d6f5e77e6a 100644
--- a/Source/bindings/v8/ExceptionState.h
+++ b/Source/bindings/v8/ExceptionState.h
@@ -48,10 +48,13 @@ public:
         : m_code(0)
         , m_isolate(isolate) { }
 
-    virtual void throwDOMException(const ExceptionCode&,  const String& message = String());
+    virtual void throwDOMException(const ExceptionCode&,  const String& message);
     virtual void throwTypeError(const String& message = String());
     virtual void throwSecurityError(const String& sanitizedMessage, const String& unsanitizedMessage = String());
 
+    // Please don't use this method. Use ::throwDOMException, and pass in a useful exception message.
+    virtual void throwUninformativeAndGenericDOMException(const ExceptionCode& ec) { throwDOMException(ec, String()); };
+
     bool hadException() const { return !m_exception.isEmpty() || m_code; }
     void clearException();
 
@@ -62,7 +65,7 @@ public:
         if (m_exception.isEmpty()) {
             if (!m_code)
                 return false;
-            throwDOMException(m_code);
+            throwUninformativeAndGenericDOMException(m_code);
         }
 
         V8ThrowException::throwError(m_exception.newLocal(m_isolate), m_isolate);
@@ -82,7 +85,7 @@ private:
 class TrackExceptionState : public ExceptionState {
 public:
     TrackExceptionState(): ExceptionState(0) { }
-    virtual void throwDOMException(const ExceptionCode&, const String& message = String()) OVERRIDE FINAL;
+    virtual void throwDOMException(const ExceptionCode&, const String& message) OVERRIDE FINAL;
     virtual void throwTypeError(const String& message = String()) OVERRIDE FINAL;
     virtual void throwSecurityError(const String& sanitizedMessage, const String& unsanitizedMessage = String()) OVERRIDE FINAL;
 };