Remove obsolete NSS version checks.

net/cert/nss_cert_database_unittest.cc

Index: net/cert/nss_cert_database_unittest.cc
diff --git a/net/cert/nss_cert_database_unittest.cc b/net/cert/nss_cert_database_unittest.cc
index f6958cf9875dda6880da9e3545b69847e53a5682..39e1a33a498225b41dd4e0d27ef49a2357ed4dfb 100644
--- a/net/cert/nss_cert_database_unittest.cc
+++ b/net/cert/nss_cert_database_unittest.cc
@@ -591,13 +591,6 @@ TEST_F(CertDatabaseNSSTest, ImportServerCert_SelfSigned) {
 }
 
 TEST_F(CertDatabaseNSSTest, ImportServerCert_SelfSigned_Trusted) {
-  // When using CERT_PKIXVerifyCert (which we do), server trust only works from
-  // 3.13.4 onwards.  See https://bugzilla.mozilla.org/show_bug.cgi?id=647364.
-  if (!NSS_VersionCheck("3.13.4")) {
-    LOG(INFO) << "test skipped on NSS < 3.13.4";
-    return;
-  }
-
   CertificateList certs;
   ASSERT_TRUE(ReadCertIntoList("punycodetest.der", &certs));
 
@@ -666,12 +659,6 @@ TEST_F(CertDatabaseNSSTest, ImportCaAndServerCert) {
 }
 
 TEST_F(CertDatabaseNSSTest, ImportCaAndServerCert_DistrustServer) {
-  // Explicit distrust only works starting in NSS 3.13.
-  if (!NSS_VersionCheck("3.13")) {
-    LOG(INFO) << "test skipped on NSS < 3.13";
-    return;
-  }
-
   CertificateList ca_certs = CreateCertificateListFromFile(
       GetTestCertsDirectory(), "root_ca_cert.pem",
       X509Certificate::FORMAT_AUTO);
@@ -760,12 +747,6 @@ TEST_F(CertDatabaseNSSTest, TrustIntermediateCa) {
   EXPECT_EQ(OK, error);
   EXPECT_EQ(0U, verify_result.cert_status);
 
-  // Explicit distrust only works starting in NSS 3.13.
-  if (!NSS_VersionCheck("3.13")) {
-    LOG(INFO) << "test partially skipped on NSS < 3.13";
-    return;
-  }
-
   // Trust the root cert and distrust the intermediate.
   EXPECT_TRUE(cert_db_->SetCertTrust(
       ca_certs[0].get(), CA_CERT, NSSCertDatabase::TRUSTED_SSL));
@@ -929,12 +910,6 @@ TEST_F(CertDatabaseNSSTest, TrustIntermediateCa3) {
 }
 
 TEST_F(CertDatabaseNSSTest, TrustIntermediateCa4) {
-  // Explicit distrust only works starting in NSS 3.13.
-  if (!NSS_VersionCheck("3.13")) {
-    LOG(INFO) << "test skipped on NSS < 3.13";
-    return;
-  }
-
   NSSCertDatabase::ImportCertFailureList failed;
 
   CertificateList ca_certs = CreateCertificateListFromFile(