bindings: Make the sequence conversion code more complaint with WebIDL.

third_party/WebKit/Source/bindings/core/v8/ExceptionMessages.h

 /*
  * 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 124 matching lines @@
     result.Append(FormatNumber(lower_bound));
     result.Append(", ");
     result.Append(FormatNumber(upper_bound));
     result.Append(upper_type == kExclusiveBound ? ')' : ']');
     result.Append('.');
     return result.ToString();
   }
 
   static String InvalidArity(const char* expected, unsigned provided);
 
-  // If  > 0, the argument index that failed type check (1-indexed.)
-  // If == 0, a (non-argument) value (e.g., a setter) failed the same check.
-  static String NotAnArrayTypeArgumentOrValue(int argument_index);
   static String NotASequenceTypeProperty(const String& property_name);
   static String NotAFiniteNumber(double value,
                                  const char* name = "value provided");
   static String NotAFiniteNumber(const Decimal& value,
                                  const char* name = "value provided");
 
   static String NotEnoughArguments(unsigned expected, unsigned provided);
 
   static String ReadOnly(const char* detail = 0);
 
@@ skipping 20 matching lines @@
 };
 
 template <>
 String ExceptionMessages::FormatNumber<float>(float number);
 template <>
 String ExceptionMessages::FormatNumber<double>(double number);
 
 }  // namespace blink
 
 #endif  // ExceptionMessages_h