QUIC - Android - small experiment to flush http_server_properties

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/rand_util.h"
 #include "base/single_thread_task_runner.h"
 #include "base/stl_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "base/thread_task_runner_handle.h"
 #include "base/values.h"
 
 namespace net {
 
 namespace {
 
 // Time to wait before starting an update the http_server_properties_impl_ cache
 // from preferences. Scheduling another update during this period will reset the
 // timer.
 const int64 kUpdateCacheDelayMs = 1000;
 
 // Time to wait before starting an update the preferences from the
 // http_server_properties_impl_ cache. Scheduling another update during this
 // period will reset the timer.
+// TODO(rtenneti): Remove OS_ANDROID ifdef after testing if flushing of
+// AlternateProtocolHosts to disk in 500ms helps with QUIC's 0RTT or not.
+#if defined(OS_ANDROID)
+const int64 kUpdatePrefsDelayMs = 500;
+#else
 const int64 kUpdatePrefsDelayMs = 5000;
+#endif
 
 // "version" 0 indicates, http_server_properties doesn't have "version"
 // property.
 const int kMissingVersion = 0;
 
 // The version number of persisted http_server_properties.
 const int kVersionNumber = 3;
 
 typedef std::vector<std::string> StringVector;
 
@@ skipping 778 matching lines @@
     completion.Run();
 }
 
 void HttpServerPropertiesManager::OnHttpServerPropertiesChanged() {
   DCHECK(pref_task_runner_->RunsTasksOnCurrentThread());
   if (!setting_prefs_)
     ScheduleUpdateCacheOnPrefThread();
 }
 
 }  // namespace net