Add unittests for net::TestRootCerts and regenerate test certificates

chrome/common/net/x509_certificate_model_unittest.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 "chrome/common/net/x509_certificate_model.h"
 
 #include "base/files/file_path.h"
 #include "base/path_service.h"
 #include "net/base/test_data_directory.h"
 #include "net/cert/nss_cert_database.h"
 #include "net/test/cert_test_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 TEST(X509CertificateModelTest, GetTypeCA) {
   scoped_refptr<net::X509Certificate> cert(
       net::ImportCertFromFile(net::GetTestCertsDirectory(),
-                              "root_ca_cert.crt"));
+                              "root_ca_cert.pem"));
   ASSERT_TRUE(cert.get());
 
 #if defined(USE_OPENSSL)
   // Remove this when OpenSSL build implements the necessary functions.
   EXPECT_EQ(net::UNKNOWN_CERT,
             x509_certificate_model::GetType(cert->os_cert_handle()));
 #else
   EXPECT_EQ(net::CA_CERT,
             x509_certificate_model::GetType(cert->os_cert_handle()));
 
@@ skipping 45 matching lines @@
 // An X.509 v1 certificate with the version field omitted should get
 // the default value v1.
 TEST(X509CertificateModelTest, GetVersionOmitted) {
   scoped_refptr<net::X509Certificate> cert(
       net::ImportCertFromFile(net::GetTestCertsDirectory(),
                               "ndn.ca.crt"));
   ASSERT_TRUE(cert.get());
 
   EXPECT_EQ("1", x509_certificate_model::GetVersion(cert->os_cert_handle()));
 }