WIP: Migrate generated bindings to new ExceptionState constructor.

Source/core/frame/DOMWindowBase64.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2013 Samsung Electronics. 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
@@ skipping 30 matching lines @@
 namespace WebCore {
 
 namespace DOMWindowBase64 {
 
 String btoa(void*, const String& stringToEncode, ExceptionState& exceptionState)
 {
     if (stringToEncode.isNull())
         return String();
 
     if (!stringToEncode.containsOnlyLatin1()) {
-        exceptionState.throwDOMException(InvalidCharacterError, "'btoa' failed: The string to be encoded contains characters outside of the Latin1 range.");
+        exceptionState.throwDOMException(InvalidCharacterError, "The string to be encoded contains characters outside of the Latin1 range.");
         return String();
     }
 
     return base64Encode(stringToEncode.latin1());
 }
 
 String atob(void*, const String& encodedString, ExceptionState& exceptionState)
 {
     if (encodedString.isNull())
         return String();
 
     if (!encodedString.containsOnlyLatin1()) {
-        exceptionState.throwDOMException(InvalidCharacterError, "'atob' failed: The string to be decoded contains characters outside of the Latin1 range.");
+        exceptionState.throwDOMException(InvalidCharacterError, "The string to be decoded contains characters outside of the Latin1 range.");
         return String();
     }
     Vector<char> out;
     if (!base64Decode(encodedString, out, isHTMLSpace<UChar>, Base64ValidatePadding)) {
-        exceptionState.throwDOMException(InvalidCharacterError, "'atob' failed: The string to be decoded is not correctly encoded.");
+        exceptionState.throwDOMException(InvalidCharacterError, "The string to be decoded is not correctly encoded.");
         return String();
     }
 
     return String(out.data(), out.size());
 }
 
 } // namespace DOMWindowBase64
 
 } // namespace WebCore