Make QUIC tests restore flags to their default values

net/quic/chromium/quic_end_to_end_unittest.cc

 // Copyright 2013 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 <memory>
 #include <ostream>
 #include <utility>
 #include <vector>
 
 #include "base/compiler_specific.h"
@@ skipping 89 matching lines @@
  protected:
   QuicEndToEndTest()
       : host_resolver_impl_(CreateResolverImpl()),
         host_resolver_(std::move(host_resolver_impl_)),
         cert_transparency_verifier_(new MultiLogCTVerifier()),
         ssl_config_service_(new SSLConfigServiceDefaults),
         proxy_service_(ProxyService::CreateDirect()),
         auth_handler_factory_(
             HttpAuthHandlerFactory::CreateDefault(&host_resolver_)),
         strike_register_no_startup_period_(false) {
-    // TODO(crbug.com/642709) These values are currently needed to avoid test
-    // test failures on iOS10.  It's unclear why this is happenening, and should
-    // be removed after investigation.
-    FLAGS_quic_enable_version_35 = true;
-    FLAGS_quic_enable_version_36 = true;
-    FLAGS_quic_enable_version_36_v2 = true;
-
     request_.method = "GET";
     request_.url = GURL("https://test.example.com/");
     request_.load_flags = 0;
 
     params_.enable_quic = true;
     params_.quic_clock = nullptr;
     params_.quic_random = nullptr;
     if (GetParam().use_stateless_rejects) {
       params_.quic_connection_options.push_back(kSREJ);
     }
@@ skipping 244 matching lines @@
   base::RunLoop().Run();
 
   for (size_t i = 0; i < num_requests; ++i) {
     CheckResponse(*consumers[i], "HTTP/1.1 200", kResponseBody);
   }
   base::STLDeleteElements(&consumers);
 }
 
 }  // namespace test
 }  // namespace net