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

net/url_request/url_request_quic_unittest.cc

Index: net/url_request/url_request_quic_unittest.cc
diff --git a/net/url_request/url_request_quic_unittest.cc b/net/url_request/url_request_quic_unittest.cc
index c285100d10dd0812b152de902d3d99431cc32f2b..a7132657ead39ab4c383d072dcf955fd4963d2e7 100644
--- a/net/url_request/url_request_quic_unittest.cc
+++ b/net/url_request/url_request_quic_unittest.cc
@@ -104,7 +104,7 @@ class URLRequestQuicTest : public ::testing::Test {
         directory.Append(FILE_PATH_LITERAL("quic_test.example.com.key.pkcs8")),
         directory.Append(FILE_PATH_LITERAL("quic_test.example.com.key.sct"))));
     server_.reset(new QuicSimpleServer(
-        test::CryptoTestUtils::ProofSourceForTesting(), config,
+        test::crypto_test_utils::ProofSourceForTesting(), config,
         net::QuicCryptoServerConfig::ConfigOptions(), AllSupportedVersions(),
         &response_cache_));
     int rv = server_->Listen(