Convert class-full-of-statics CryptoTestUtils into a namespace

net/tools/quic/stateless_rejector_test.cc

Index: net/tools/quic/stateless_rejector_test.cc
diff --git a/net/tools/quic/stateless_rejector_test.cc b/net/tools/quic/stateless_rejector_test.cc
index 23b6e3a53be8f447e50da971fdef2ebcbdcbb43c..fdc883ef337ad86c567be97c2ecd153c3852e661 100644
--- a/net/tools/quic/stateless_rejector_test.cc
+++ b/net/tools/quic/stateless_rejector_test.cc
@@ -74,10 +74,10 @@ std::vector<TestParams> GetTestParams() {
 class StatelessRejectorTest : public ::testing::TestWithParam<TestParams> {
  public:
   StatelessRejectorTest()
-      : proof_source_(CryptoTestUtils::ProofSourceForTesting()),
+      : proof_source_(crypto_test_utils::ProofSourceForTesting()),
         config_(QuicCryptoServerConfig::TESTING,
                 QuicRandom::GetInstance(),
-                CryptoTestUtils::ProofSourceForTesting()),
+                crypto_test_utils::ProofSourceForTesting()),
         config_peer_(&config_),
         compressed_certs_cache_(
             QuicCompressedCertsCache::kQuicCompressedCertsCacheSize),
@@ -170,7 +170,7 @@ INSTANTIATE_TEST_CASE_P(Flags,
 
 TEST_P(StatelessRejectorTest, InvalidChlo) {
   // clang-format off
-  const CryptoHandshakeMessage client_hello = CryptoTestUtils::Message(
+  const CryptoHandshakeMessage client_hello = crypto_test_utils::Message(
       "CHLO",
       "PDMD", "X509",
       "COPT", "SREJ",
@@ -195,7 +195,7 @@ TEST_P(StatelessRejectorTest, InvalidChlo) {
 
 TEST_P(StatelessRejectorTest, ValidChloWithoutSrejSupport) {
   // clang-format off
-  const CryptoHandshakeMessage client_hello = CryptoTestUtils::Message(
+  const CryptoHandshakeMessage client_hello = crypto_test_utils::Message(
       "CHLO",
       "PDMD", "X509",
       "AEAD", "AESG",
@@ -214,7 +214,7 @@ TEST_P(StatelessRejectorTest, ValidChloWithoutSrejSupport) {
 
 TEST_P(StatelessRejectorTest, RejectChlo) {
   // clang-format off
-  const CryptoHandshakeMessage client_hello = CryptoTestUtils::Message(
+  const CryptoHandshakeMessage client_hello = crypto_test_utils::Message(
       "CHLO",
       "PDMD", "X509",
       "AEAD", "AESG",
@@ -254,12 +254,12 @@ TEST_P(StatelessRejectorTest, RejectChlo) {
 }
 
 TEST_P(StatelessRejectorTest, AcceptChlo) {
-  const uint64_t xlct = CryptoTestUtils::LeafCertHashForTesting();
+  const uint64_t xlct = crypto_test_utils::LeafCertHashForTesting();
   const string xlct_hex =
       "#" + QuicTextUtils::HexEncode(reinterpret_cast<const char*>(&xlct),
                                      sizeof(xlct));
   // clang-format off
-  const CryptoHandshakeMessage client_hello = CryptoTestUtils::Message(
+  const CryptoHandshakeMessage client_hello = crypto_test_utils::Message(
       "CHLO",
       "PDMD", "X509",
       "AEAD", "AESG",