Extract ScopedTestNSSDB from nss_util.

crypto/crypto.gypi

 # 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.
 
 {
   'variables': {
     # Put all transitive dependencies for Windows HMAC here.
     # This is required so that we can build them for nacl win64.
     'variables': {
       'hmac_win64_related_sources': [
@@ skipping 64 matching lines @@
       'p224.cc',
       'p224.h',
       'random.h',
       'random.cc',
       'rsa_private_key.cc',
       'rsa_private_key.h',
       'rsa_private_key_nss.cc',
       'rsa_private_key_openssl.cc',
       'scoped_capi_types.h',
       'scoped_nss_types.h',
+      'scoped_test_nss_db.cc',
+      'scoped_test_nss_db.h',
       'secure_hash.h',
       'secure_hash_default.cc',
       'secure_hash_openssl.cc',
       'sha2.cc',
       'sha2.h',
       'signature_creator.h',
       'signature_creator_nss.cc',
       'signature_creator_openssl.cc',
       'signature_verifier.h',
       'signature_verifier_nss.cc',
       'signature_verifier_openssl.cc',
       'symmetric_key_nss.cc',
       'symmetric_key_openssl.cc',
       'third_party/nss/chromium-nss.h',
       'third_party/nss/pk11akey.cc',
       'third_party/nss/rsawrapr.c',
       'third_party/nss/secsign.cc',
     ]
   }
 }