Do not load alternative service from disk for non-https servers.

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 <utility>
 
 #include "base/bind.h"
 #include "base/metrics/histogram_macros.h"
@@ skipping 679 matching lines @@
     const url::SchemeHostPort& server,
     const base::DictionaryValue& server_pref_dict,
     AlternativeServiceMap* alternative_service_map) {
   DCHECK(alternative_service_map->Peek(server) ==
          alternative_service_map->end());
   const base::ListValue* alternative_service_list;
   if (!server_pref_dict.GetListWithoutPathExpansion(
           kAlternativeServiceKey, &alternative_service_list)) {
     return true;
   }
+  if (server.scheme() != "https") {
+    return false;
+  }
 
   AlternativeServiceInfoVector alternative_service_info_vector;
   for (const auto& alternative_service_list_item : *alternative_service_list) {
     const base::DictionaryValue* alternative_service_dict;
     if (!alternative_service_list_item->GetAsDictionary(
             &alternative_service_dict))
       return false;
     AlternativeServiceInfo alternative_service_info;
     if (!ParseAlternativeServiceDict(*alternative_service_dict,
                                      server.Serialize(),
@@ skipping 536 matching lines @@
                                                        quic_servers_dict);
 }
 
 void HttpServerPropertiesManager::OnHttpServerPropertiesChanged() {
   DCHECK(pref_task_runner_->RunsTasksOnCurrentThread());
   if (!setting_prefs_)
     ScheduleUpdateCacheOnPrefThread();
 }
 
 }  // namespace net