[webcrypto] Add support for import/export of "raw" formatted EC keys.

components/webcrypto/fuzzer_support.h

 // Copyright 2016 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.
 
 #ifndef COMPONENTS_WEBCRYPTO_FUZZER_SUPPORT_H_
 #define COMPONENTS_WEBCRYPTO_FUZZER_SUPPORT_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "third_party/WebKit/public/platform/WebCryptoKey.h"
 
 namespace webcrypto {
 
 void ImportEcKeyFromDerFuzzData(const uint8_t* data,
                                 size_t size,
                                 blink::WebCryptoKeyFormat format);
 
+void ImportEcKeyFromRawFuzzData(const uint8_t* data, size_t size);
+
 void ImportRsaKeyFromDerFuzzData(const uint8_t* data,
                                  size_t size,
                                  blink::WebCryptoKeyFormat format);
 
 }  // namespace webcrypto
 
 #endif  // COMPONENTS_WEBCRYPTO_FUZZER_SUPPORT_H_