Refactor WebCrypto code

content/child/webcrypto/openssl/util_openssl.cc

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "content/child/webcrypto/openssl/util_openssl.h"
+
+#include <openssl/evp.h>
+
+#include "content/child/webcrypto/crypto_data.h"
+#include "content/child/webcrypto/platform_crypto.h"
+#include "crypto/openssl_util.h"
+
+namespace content {
+
+namespace webcrypto {
+
+void PlatformInit() {
+  crypto::EnsureOpenSSLInit();
+}
+
+const EVP_MD* GetDigest(blink::WebCryptoAlgorithmId id) {
+  switch (id) {
+    case blink::WebCryptoAlgorithmIdSha1:
+      return EVP_sha1();
+    case blink::WebCryptoAlgorithmIdSha256:
+      return EVP_sha256();
+    case blink::WebCryptoAlgorithmIdSha384:
+      return EVP_sha384();
+    case blink::WebCryptoAlgorithmIdSha512:
+      return EVP_sha512();
+    default:
+      return NULL;
+  }
+}
+
+AlgorithmImplementation* CreatePlatformRsaOaepImplementation() {
+  // TODO(eroman):
+  return NULL;
+}
+
+AlgorithmImplementation* CreatePlatformRsaSsaImplementation() {
+  // TODO(eroman):
+  return NULL;
+}
+
+}  // namespace webcrypto
+
+}  // namespace content