html_viewer: Move webcrypto to a place where html_viewer can use it.

content/child/webcrypto/openssl/rsa_ssa_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/rsa_hashed_algorithm_openssl.h"
-#include "content/child/webcrypto/openssl/rsa_sign_openssl.h"
-#include "content/child/webcrypto/status.h"
-
-namespace content {
-
-namespace webcrypto {
-
-namespace {
-
-class RsaSsaImplementation : public RsaHashedAlgorithm {
- public:
-  RsaSsaImplementation()
-      : RsaHashedAlgorithm(blink::WebCryptoKeyUsageVerify,
-                           blink::WebCryptoKeyUsageSign) {}
-
-  const char* GetJwkAlgorithm(
-      const blink::WebCryptoAlgorithmId hash) const override {
-    switch (hash) {
-      case blink::WebCryptoAlgorithmIdSha1:
-        return "RS1";
-      case blink::WebCryptoAlgorithmIdSha256:
-        return "RS256";
-      case blink::WebCryptoAlgorithmIdSha384:
-        return "RS384";
-      case blink::WebCryptoAlgorithmIdSha512:
-        return "RS512";
-      default:
-        return NULL;
-    }
-  }
-
-  Status Sign(const blink::WebCryptoAlgorithm& algorithm,
-              const blink::WebCryptoKey& key,
-              const CryptoData& data,
-              std::vector<uint8_t>* buffer) const override {
-    return RsaSign(key, 0, data, buffer);
-  }
-
-  Status Verify(const blink::WebCryptoAlgorithm& algorithm,
-                const blink::WebCryptoKey& key,
-                const CryptoData& signature,
-                const CryptoData& data,
-                bool* signature_match) const override {
-    return RsaVerify(key, 0, signature, data, signature_match);
-  }
-};
-
-}  // namespace
-
-AlgorithmImplementation* CreatePlatformRsaSsaImplementation() {
-  return new RsaSsaImplementation;
-}
-
-}  // namespace webcrypto
-
-}  // namespace content