Various formatting cleanups to net/quic/crypto and net/quic/congestion_control

net/quic/core/crypto/aes_128_gcm_12_encrypter.h

 // Copyright (c) 2013 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 NET_QUIC_CORE_CRYPTO_AES_128_GCM_12_ENCRYPTER_H_
 #define NET_QUIC_CORE_CRYPTO_AES_128_GCM_12_ENCRYPTER_H_
 
-#include <stddef.h>
-
 #include "base/macros.h"
 #include "net/quic/core/crypto/aead_base_encrypter.h"
 #include "net/quic/platform/api/quic_export.h"
 
 namespace net {
 
 // An Aes128Gcm12Encrypter is a QuicEncrypter that implements the
 // AEAD_AES_128_GCM_12 algorithm specified in RFC 5282. Create an instance by
 // calling QuicEncrypter::Create(kAESG).
 //
 // It uses an authentication tag of 12 bytes (96 bits). The fixed prefix
 // of the nonce is four bytes.
 class QUIC_EXPORT_PRIVATE Aes128Gcm12Encrypter : public AeadBaseEncrypter {
  public:
   enum {
     // Authentication tags are truncated to 96 bits.
     kAuthTagSize = 12,
   };
 
   Aes128Gcm12Encrypter();
   ~Aes128Gcm12Encrypter() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(Aes128Gcm12Encrypter);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_CORE_CRYPTO_AES_128_GCM_12_ENCRYPTER_H_