Fix header guards in //net.

net/cert/internal/nist_pkits_unittest.h

 // Copyright 2016 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_CERT_INTERNAL_NIST_PKITS_UNITTEST_H
-#define NET_CERT_INTERNAL_NIST_PKITS_UNITTEST_H
+#ifndef NET_CERT_INTERNAL_NIST_PKITS_UNITTEST_H_
+#define NET_CERT_INTERNAL_NIST_PKITS_UNITTEST_H_
 
 #include "net/cert/internal/test_helpers.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 // Parameterized test class for PKITS tests.
 // The instantiating code should define a PkitsTestDelegate with an appropriate
 // static Verify method, and then INSTANTIATE_TYPED_TEST_CASE_P for each
 // testcase (each TYPED_TEST_CASE_P in pkits_testcases-inl.h).
 template <typename PkitsTestDelegate>
 class PkitsTest : public ::testing::Test {
  public:
   template <size_t num_certs, size_t num_crls>
   bool Verify(const char* const (&cert_names)[num_certs],
               const char* const (&crl_names)[num_crls]) {
     std::vector<std::string> cert_ders;
     for (const std::string& s : cert_names)
       cert_ders.push_back(net::ReadTestFileToString(
           "net/third_party/nist-pkits/certs/" + s + ".crt"));
     std::vector<std::string> crl_ders;
     for (const std::string& s : crl_names)
       crl_ders.push_back(net::ReadTestFileToString(
           "net/third_party/nist-pkits/crls/" + s + ".crl"));
     return PkitsTestDelegate::Verify(cert_ders, crl_ders);
   }
 };
 
 // Inline the generated test code:
 #include "net/third_party/nist-pkits/pkits_testcases-inl.h"
 
-#endif  // NET_CERT_INTERNAL_NIST_PKITS_UNITTEST_H
+#endif  // NET_CERT_INTERNAL_NIST_PKITS_UNITTEST_H_