Switch to standard integer types in crypto/.

crypto/aead_openssl.h

 // Copyright 2015 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 CRYPTO_AEAD_H_
 #define CRYPTO_AEAD_H_
 
+#include <stddef.h>
+
 #include "base/strings/string_piece.h"
 #include "crypto/crypto_export.h"
 
 struct evp_aead_st;
 
 namespace crypto {
 
 // This class exposes the AES-128-CTR-HMAC-SHA256 AEAD, currently only
 // for OpenSSL builds.
 class CRYPTO_EXPORT Aead {
@@ skipping 21 matching lines @@
   size_t NonceLength() const;
 
  private:
   const std::string* key_;
   const evp_aead_st* aead_;
 };
 
 }  // namespace crypto
 
 #endif  // CRYPTO_ENCRYPTOR_H_