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

net/quic/test_tools/fake_proof_source.cc

 // Copyright (c) 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.
 
 #include "net/quic/platform/api/quic_logging.h"
 #include "net/quic/test_tools/fake_proof_source.h"
 #include "net/quic/test_tools/crypto_test_utils.h"
 
 using std::string;
 
 namespace net {
 namespace test {
 
 FakeProofSource::FakeProofSource()
-    : delegate_(CryptoTestUtils::ProofSourceForTesting()) {}
+    : delegate_(crypto_test_utils::ProofSourceForTesting()) {}
 
 FakeProofSource::~FakeProofSource() {}
 
 FakeProofSource::Params::Params(const QuicSocketAddress& server_addr,
                                 std::string hostname,
                                 std::string server_config,
                                 QuicVersion quic_version,
                                 std::string chlo_hash,
                                 const QuicTagVector& connection_options,
                                 std::unique_ptr<ProofSource::Callback> callback)
@@ skipping 71 matching lines @@
       params.quic_version, params.chlo_hash, params.connection_options, &chain,
       &proof);
 
   params.callback->Run(ok, chain, proof, /* details = */ nullptr);
   auto it = params_.begin() + n;
   params_.erase(it);
 }
 
 }  // namespace test
 }  // namespace net