Introduce Promise mapping to the IDL generator

Source/modules/crypto/CryptoResult.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 67 matching lines @@
     m_promiseResolver->fulfill(Key::create(key));
     finish();
 }
 
 void CryptoResult::completeWithKeyPair(const WebKit::WebCryptoKey& publicKey, const WebKit::WebCryptoKey& privateKey)
 {
     m_promiseResolver->fulfill(KeyPair::create(publicKey, privateKey));
     finish();
 }
 
-ScriptObject CryptoResult::promise()
+ScriptPromise CryptoResult::promise()
 {
     return m_promiseResolver->promise();
 }
 
 CryptoResult::CryptoResult()
     : m_promiseResolver(ScriptPromiseResolver::create())
     , m_finished(false) { }
 
 void CryptoResult::finish()
 {
     ASSERT(!m_finished);
     m_finished = true;
 }
 
 } // namespace WebCore