network_time: Remove NetworkTimeService

chrome/browser/network_time/network_time_service.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 "chrome/browser/network_time/network_time_service.h"
-
-#include "base/command_line.h"
-#include "base/prefs/pref_service.h"
-#include "chrome/browser/browser_process.h"
-#include "chrome/browser/network_time/network_time_tracker.h"
-#include "chrome/browser/profiles/profile.h"
-#include "chrome/common/chrome_switches.h"
-#include "chrome/common/pref_names.h"
-#include "components/pref_registry/pref_registry_syncable.h"
-
-// static
-void NetworkTimeService::RegisterProfilePrefs(
-    user_prefs::PrefRegistrySyncable* registry) {
-  registry->RegisterDictionaryPref(
-      prefs::kNetworkTimeMapping,
-      new base::DictionaryValue(),
-      user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
-}
-
-NetworkTimeService::NetworkTimeService(Profile* profile)
-    : profile_(profile) {
-  if (!CommandLine::ForCurrentProcess()->HasSwitch(
-      switches::kEnableNetworkTime)) {
-    return;
-  }
-
-  const base::DictionaryValue* time_mapping =
-      profile_->GetPrefs()->GetDictionary(prefs::kNetworkTimeMapping);
-  double local_time_js;
-  double network_time_js;
-  if (time_mapping->GetDouble("local", &local_time_js) &&
-      time_mapping->GetDouble("network", &network_time_js)) {
-    base::Time local_time_saved = base::Time::FromJsTime(local_time_js);
-    if (local_time_saved > base::Time::Now() ||
-        base::Time::Now() - local_time_saved > base::TimeDelta::FromDays(7)) {
-      // Drop saved mapping if clock skew has changed or the data is too old.
-      profile_->GetPrefs()->ClearPref(prefs::kNetworkTimeMapping);
-    } else {
-      g_browser_process->network_time_tracker()->InitFromSavedTime(
-          NetworkTimeTracker::TimeMapping(
-              local_time_saved, base::Time::FromJsTime(network_time_js)));
-    }
-  }
-}
-
-NetworkTimeService::~NetworkTimeService() {}
-
-void NetworkTimeService::Shutdown() {
-  if (g_browser_process->network_time_tracker()->received_network_time()) {
-    // Update time mapping if tracker received time update from server, i.e.
-    // mapping is accurate.
-    base::Time local_now = base::Time::Now();
-    base::Time network_now = GetNetworkTime(local_now);
-    base::DictionaryValue time_mapping;
-    time_mapping.SetDouble("local", local_now.ToJsTime());
-    time_mapping.SetDouble("network", network_now.ToJsTime());
-    profile_->GetPrefs()->Set(prefs::kNetworkTimeMapping, time_mapping);
-  }
-}
-
-base::Time NetworkTimeService::GetNetworkTime(
-    const base::Time& local_time) {
-  if (local_time.is_null() || local_time.is_max())
-    return local_time;
-
-  base::Time network_time_now;
-  if (!g_browser_process->network_time_tracker()->GetNetworkTime(
-          base::TimeTicks::Now(), &network_time_now, NULL)) {
-    return local_time;
-  }
-  return local_time + (network_time_now - base::Time::Now());
-}
-
-base::Time NetworkTimeService::GetNetworkNow() {
-  return GetNetworkTime(base::Time::Now());
-}