Drop redundant 'ExceptionMessages::failedToXXX' calls.

Source/bindings/v8/Dictionary.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 732 matching lines @@
     ASSERT(!m_dirty);
     m_dirty = true;
     m_isNullable = isNullable;
     m_propertyTypeName = typeName;
 
     return *this;
 }
 
 void Dictionary::ConversionContext::throwTypeError(const String& detail)
 {
-    if (forConstructor()) {
-        exceptionState().throwTypeError(detail);
-    } else {
-        ASSERT(!methodName().isEmpty());
-        exceptionState().throwTypeError(ExceptionMessages::failedToExecute(interfaceName(), methodName(), detail));
-    }
+    exceptionState().throwTypeError(detail);
 }
 
 } // namespace WebCore