Improve generated "Not enough arguments." TypeError exceptions.

Source/bindings/v8/ExceptionMessages.cpp

 /*
  * Copyright (C) 2013 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 15 matching lines @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "bindings/v8/ExceptionMessages.h"
 
 namespace WebCore {
 
+String ExceptionMessages::failedToConstruct(const String& type, const String& detail)
+{
+    return "Failed to construct '" + type + (!detail.isEmpty() ? String("': " + detail) : String("'"));
+}
+
 String ExceptionMessages::failedToExecute(const String& method, const String& type, const String& detail)
 {
     return "Failed to execute '" + method + "' on '" + type + (!detail.isEmpty() ? String("': " + detail) : String("'"));
 }
 
 String ExceptionMessages::failedToGet(const String& property, const String& type, const String& detail)
 {
     return "Failed to read the '" + property + "' property from '" + type + "': " + detail;
 }
 
 String ExceptionMessages::failedToSet(const String& property, const String& type, const String& detail)
 {
     return "Failed to set the '" + property + "' property on '" + type + "': " + detail;
 }
 
+String ExceptionMessages::notEnoughArguments(unsigned expected, unsigned provided)
+{
+    return String::number(expected) + " argument" + (expected > 1 ? "s" : "") + " required, but only " + String::number(provided) + " present.";
+}
+
 } // namespace WebCore