Update from https://crrev.com/305340

net/http/http_server_properties_manager.cc

 // Copyright 2014 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/http/http_server_properties_manager.h"
 
 #include "base/bind.h"
 #include "base/metrics/histogram.h"
 #include "base/prefs/pref_service.h"
 #include "base/single_thread_task_runner.h"
@@ skipping 431 matching lines @@
 
       double probability = 1;
       if (port_alternate_protocol_dict->HasKey("probability") &&
           !port_alternate_protocol_dict->GetDoubleWithoutPathExpansion(
               "probability", &probability)) {
         DVLOG(1) << "Malformed Alternate-Protocol server: " << server_str;
         detected_corrupted_prefs = true;
         continue;
       }
 
-      net::AlternateProtocolInfo port_alternate_protocol(port,
-                                                         protocol,
-                                                         probability);
+      net::AlternateProtocolInfo port_alternate_protocol(
+          static_cast<uint16>(port), protocol, probability);
       alternate_protocol_map->Put(server, port_alternate_protocol);
       ++count;
     } while (false);
 
     // Get SupportsQuic.
     DCHECK(supports_quic_map->find(server) == supports_quic_map->end());
     const base::DictionaryValue* supports_quic_dict = NULL;
     if (!server_pref_dict->GetDictionaryWithoutPathExpansion(
             "supports_quic", &supports_quic_dict)) {
       continue;
@@ skipping 325 matching lines @@
     completion.Run();
 }
 
 void HttpServerPropertiesManager::OnHttpServerPropertiesChanged() {
   DCHECK(pref_task_runner_->RunsTasksOnCurrentThread());
   if (!setting_prefs_)
     ScheduleUpdateCacheOnPrefThread();
 }
 
 }  // namespace net