Add unittests for net::TestRootCerts and regenerate test certificates

chrome/browser/chromeos/policy/policy_cert_verifier_browsertest.cc

Index: chrome/browser/chromeos/policy/policy_cert_verifier_browsertest.cc
diff --git a/chrome/browser/chromeos/policy/policy_cert_verifier_browsertest.cc b/chrome/browser/chromeos/policy/policy_cert_verifier_browsertest.cc
index aea0574133ea269f625bc36cb66a596e95dbfa8f..4f00bcf8ad7107f42ef3ca1be7863f59c12598a9 100644
--- a/chrome/browser/chromeos/policy/policy_cert_verifier_browsertest.cc
+++ b/chrome/browser/chromeos/policy/policy_cert_verifier_browsertest.cc
@@ -152,7 +152,7 @@ TEST_F(PolicyCertVerifierTest, VerifyUntrustedCert) {
 TEST_F(PolicyCertVerifierTest, VerifyTrustedCert) {
   // |ca_cert| is the issuer of |cert|.
   scoped_refptr<net::X509Certificate> ca_cert =
-      LoadCertificate("root_ca_cert.crt", net::CA_CERT);
+      LoadCertificate("root_ca_cert.pem", net::CA_CERT);
   ASSERT_TRUE(ca_cert.get());
   scoped_refptr<net::X509Certificate> cert =
       LoadCertificate("ok_cert.pem", net::SERVER_CERT);
@@ -206,7 +206,7 @@ TEST_F(PolicyCertVerifierTest, VerifyUsingAdditionalTrustAnchor) {
 
   // |ca_cert| is the issuer of |cert|.
   scoped_refptr<net::X509Certificate> ca_cert =
-      LoadCertificate("root_ca_cert.crt", net::CA_CERT);
+      LoadCertificate("root_ca_cert.pem", net::CA_CERT);
   ASSERT_TRUE(ca_cert.get());
   scoped_refptr<net::X509Certificate> cert =
       LoadCertificate("ok_cert.pem", net::SERVER_CERT);
@@ -251,7 +251,7 @@ TEST_F(PolicyCertVerifierTest, ProfileRemainsTainted) {
 
   // |ca_cert| is the issuer of |cert|.
   scoped_refptr<net::X509Certificate> ca_cert =
-      LoadCertificate("root_ca_cert.crt", net::CA_CERT);
+      LoadCertificate("root_ca_cert.pem", net::CA_CERT);
   ASSERT_TRUE(ca_cert.get());
   scoped_refptr<net::X509Certificate> cert =
       LoadCertificate("ok_cert.pem", net::SERVER_CERT);