[webcrypto] Replace KeyAlgorithm interfaces with an Object.

Source/modules/crypto/KeyAlgorithm.cpp

-/*
- * Copyright (C) 2014 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
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "config.h"
-#include "modules/crypto/KeyAlgorithm.h"
-
-#include "modules/crypto/AesKeyAlgorithm.h"
-#include "modules/crypto/HmacKeyAlgorithm.h"
-#include "modules/crypto/NormalizeAlgorithm.h"
-#include "modules/crypto/RsaHashedKeyAlgorithm.h"
-#include "modules/crypto/RsaKeyAlgorithm.h"
-#include "public/platform/WebCryptoAlgorithm.h"
-#include "wtf/text/WTFString.h"
-
-namespace WebCore {
-
-KeyAlgorithm::~KeyAlgorithm()
-{
-}
-
-KeyAlgorithm* KeyAlgorithm::create(const blink::WebCryptoKeyAlgorithm& algorithm)
-{
-    switch (algorithm.paramsType()) {
-    case blink::WebCryptoKeyAlgorithmParamsTypeNone:
-        return new KeyAlgorithm(algorithm);
-    case blink::WebCryptoKeyAlgorithmParamsTypeAes:
-        return AesKeyAlgorithm::create(algorithm);
-    case blink::WebCryptoKeyAlgorithmParamsTypeHmac:
-        return HmacKeyAlgorithm::create(algorithm);
-    case blink::WebCryptoKeyAlgorithmParamsTypeRsaHashed:
-        return RsaHashedKeyAlgorithm::create(algorithm);
-    }
-    ASSERT_NOT_REACHED();
-    return 0;
-}
-
-KeyAlgorithm* KeyAlgorithm::createHash(const blink::WebCryptoAlgorithm& hash)
-{
-    // Assume that none of the hash algorithms have any parameters.
-    ASSERT(hash.paramsType() == blink::WebCryptoAlgorithmParamsTypeNone);
-    return new KeyAlgorithm(blink::WebCryptoKeyAlgorithm(hash.id(), nullptr));
-}
-
-KeyAlgorithm::KeyAlgorithm(const blink::WebCryptoKeyAlgorithm& algorithm)
-    : m_algorithm(algorithm)
-{
-    ScriptWrappable::init(this);
-}
-
-String KeyAlgorithm::name()
-{
-    const blink::WebCryptoAlgorithmInfo* info = blink::WebCryptoAlgorithm::lookupAlgorithmInfo(m_algorithm.id());
-    return info->name;
-}
-
-bool KeyAlgorithm::isAesKeyAlgorithm() const
-{
-    return m_algorithm.paramsType() == blink::WebCryptoKeyAlgorithmParamsTypeAes;
-}
-
-bool KeyAlgorithm::isHmacKeyAlgorithm() const
-{
-    return m_algorithm.paramsType() == blink::WebCryptoKeyAlgorithmParamsTypeHmac;
-}
-
-bool KeyAlgorithm::isRsaHashedKeyAlgorithm() const
-{
-    return m_algorithm.paramsType() == blink::WebCryptoKeyAlgorithmParamsTypeRsaHashed;
-}
-
-void KeyAlgorithm::trace(Visitor*)
-{
-}
-
-} // namespace WebCore