Move bit_cast from base/macros.h to its own header

components/webcrypto/algorithms/rsa_oaep.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 <openssl/evp.h>
 #include <stddef.h>
 #include <stdint.h>
+#include <string.h>
 
 #include "components/webcrypto/algorithms/rsa.h"
 #include "components/webcrypto/algorithms/util.h"
 #include "components/webcrypto/blink_key_handle.h"
 #include "components/webcrypto/crypto_data.h"
 #include "components/webcrypto/status.h"
 #include "crypto/openssl_util.h"
 #include "crypto/scoped_openssl_types.h"
 #include "third_party/WebKit/public/platform/WebCryptoAlgorithmParams.h"
 #include "third_party/WebKit/public/platform/WebCryptoKeyAlgorithm.h"
@@ skipping 119 matching lines @@
   }
 };
 
 }  // namespace
 
 scoped_ptr<AlgorithmImplementation> CreateRsaOaepImplementation() {
   return make_scoped_ptr(new RsaOaepImplementation);
 }
 
 }  // namespace webcrypto