[webcrypto] Remove support for null import algorithms.

content/child/webcrypto/platform_crypto_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/platform_crypto.h"
 
 #include <vector>
 #include <openssl/aes.h>
 #include <openssl/evp.h>
 #include <openssl/hmac.h>
@@ skipping 346 matching lines @@
 // Key is guaranteed to be an RSA SSA key.
 Status VerifyRsaSsaPkcs1v1_5(PublicKey* key,
                              const blink::WebCryptoAlgorithm& hash,
                              const CryptoData& signature,
                              const CryptoData& data,
                              bool* signature_match) {
   // TODO(eroman): http://crbug.com/267888
   return Status::ErrorUnsupported();
 }
 
-Status ImportKeySpki(const blink::WebCryptoAlgorithm& algorithm_or_null,
+Status ImportKeySpki(const blink::WebCryptoAlgorithm& algorithm,
                      const CryptoData& key_data,
                      bool extractable,
                      blink::WebCryptoKeyUsageMask usage_mask,
                      blink::WebCryptoKey* key) {
   // TODO(eroman): http://crbug.com/267888
   return Status::ErrorUnsupported();
 }
 
-Status ImportKeyPkcs8(const blink::WebCryptoAlgorithm& algorithm_or_null,
+Status ImportKeyPkcs8(const blink::WebCryptoAlgorithm& algorithm,
                       const CryptoData& key_data,
                       bool extractable,
                       blink::WebCryptoKeyUsageMask usage_mask,
                       blink::WebCryptoKey* key) {
   // TODO(eroman): http://crbug.com/267888
   return Status::ErrorUnsupported();
 }
 
 Status ExportKeySpki(PublicKey* key, blink::WebArrayBuffer* buffer) {
   // TODO(eroman): http://crbug.com/267888
@@ skipping 39 matching lines @@
                          blink::WebCryptoKey* key) {
   // TODO(eroman): http://crbug.com/267888
   return Status::ErrorUnsupported();
 }
 
 }  // namespace platform
 
 }  // namespace webcrypto
 
 }  // namespace content