clean up code at crypto folder.

crypto/ec_private_key_nss.cc

 // Copyright (c) 2012 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 "crypto/ec_private_key.h"
 
 extern "C" {
 // Work around NSS missing SEC_BEGIN_PROTOS in secmodt.h.  This must come before
 // other NSS headers.
 #include <secmodt.h>
@@ skipping 227 matching lines @@
   // PrivateKeyInfo because PK11_ImportDERPrivateKeyInfoAndReturnKey doesn't
   // support EC keys.
   // https://bugzilla.mozilla.org/show_bug.cgi?id=327773
   SECItem password_item = {
     siBuffer,
     reinterpret_cast<unsigned char*>(const_cast<char*>(password.data())),
     static_cast<unsigned>(password.size())
   };
 
   SECKEYEncryptedPrivateKeyInfo* encrypted = PK11_ExportEncryptedPrivKeyInfo(
-      NULL, // Slot, optional.
+      NULL,  // Slot, optional.
       SEC_OID_PKCS12_V2_PBE_WITH_SHA1_AND_3KEY_TRIPLE_DES_CBC,
       &password_item,
       key_,
       iterations,
-      NULL); // wincx.
+      NULL);  // wincx.
 
   if (!encrypted) {
     DLOG(ERROR) << "PK11_ExportEncryptedPrivKeyInfo: " << PORT_GetError();
     return false;
   }
 
   ScopedPLArenaPool arena(PORT_NewArena(DER_DEFAULT_CHUNKSIZE));
   SECItem der_key = {siBuffer, NULL, 0};
   SECItem* encoded_item = SEC_ASN1EncodeItem(
       arena.get(),
@@ skipping 132 matching lines @@
 
   if (success) {
     CHECK_EQ(ecKey, SECKEY_GetPublicKeyType(result->public_key_));
     return result.release();
   }
 
   return NULL;
 }
 
 }  // namespace crypto