[EasyUnlock] Force user to enter their password after 20 hours.

components/proximity_auth/proximity_auth_pref_manager.cc

 // Copyright 2015 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/proximity_auth/proximity_auth_pref_manager.h"
 
 #include <memory>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/values.h"
 #include "components/prefs/pref_registry_simple.h"
 #include "components/prefs/pref_service.h"
 #include "components/prefs/scoped_user_pref_update.h"
 #include "components/proximity_auth/logging/logging.h"
 #include "components/proximity_auth/proximity_auth_pref_names.h"
 
 namespace proximity_auth {
 
 ProximityAuthPrefManager::ProximityAuthPrefManager(PrefService* pref_service)
     : pref_service_(pref_service) {}
 
 ProximityAuthPrefManager::~ProximityAuthPrefManager() {}
 
 // static
 void ProximityAuthPrefManager::RegisterPrefs(PrefRegistrySimple* registry) {
+  registry->RegisterInt64Pref(prefs::kProximityAuthLastPasswordEntryTimestampMs,
+                              0L);
   registry->RegisterDictionaryPref(prefs::kProximityAuthRemoteBleDevices);
 }
 
 bool ProximityAuthPrefManager::HasDeviceWithAddress(
     const std::string& bluetooth_address) const {
   return pref_service_->GetDictionary(prefs::kProximityAuthRemoteBleDevices)
       ->HasKey(bluetooth_address);
 }
 
 bool ProximityAuthPrefManager::HasDeviceWithPublicKey(
@@ skipping 59 matching lines @@
   DictionaryPrefUpdate remote_ble_devices_update(
       pref_service_, prefs::kProximityAuthRemoteBleDevices);
   return remote_ble_devices_update->RemoveWithoutPathExpansion(
       bluetooth_address, nullptr);
 }
 
 bool ProximityAuthPrefManager::RemoveDeviceWithPublicKey(
     const std::string& public_key) {
   return RemoveDeviceWithAddress(GetDeviceAddress(public_key));
 }
+void ProximityAuthPrefManager::SetLastPasswordEntryTimestampMs(
+    int64_t timestamp_ms) {
+  pref_service_->SetInt64(prefs::kProximityAuthLastPasswordEntryTimestampMs,
+                          timestamp_ms);
+}
+
+int64_t ProximityAuthPrefManager::GetLastPasswordEntryTimestampMs() {
+  return pref_service_->GetInt64(
+      prefs::kProximityAuthLastPasswordEntryTimestampMs);
+}
 
 const base::DictionaryValue* ProximityAuthPrefManager::GetRemoteBleDevices()
     const {
   return pref_service_->GetDictionary(prefs::kProximityAuthRemoteBleDevices);
 }
 
 }  // namespace proximity_auth