[Cronet] Retain block passed to setRequestFilterBlock on iOS.

components/cronet/ios/test/test_server.cc

 // Copyright 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 "components/cronet/ios/test/test_server.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
@@ skipping 26 matching lines @@
 }
 
 }  // namespace
 
 namespace cronet {
 
 /* static */
 bool TestServer::Start() {
   DCHECK(!g_test_server.get());
   g_test_server = base::MakeUnique<net::EmbeddedTestServer>(
-      net::EmbeddedTestServer::TYPE_HTTPS);
+      net::EmbeddedTestServer::TYPE_HTTP);
   g_test_server->RegisterRequestHandler(base::Bind(&EchoHeaderInRequest));
   CHECK(g_test_server->Start());
   return true;
 }
 
 void TestServer::Shutdown() {
   DCHECK(g_test_server.get());
   g_test_server.reset();
 }
 
 std::string TestServer::GetEchoHeaderURL(const std::string& header_name) {
   DCHECK(g_test_server);
   return g_test_server->GetURL(kEchoHeaderPath + header_name).spec();
 }
 
 }  // namespace cronet