arc: Message for a low-battery case of migration notification.

chrome/browser/ui/webui/chromeos/login/encryption_migration_screen_handler.cc

 // Copyright 2017 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/ui/webui/chromeos/login/encryption_migration_screen_handler.h"
 
 #include <cmath>
 #include <string>
 #include <utility>
 
 #include "ash/system/devicetype_utils.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "base/sys_info.h"
 #include "base/task_scheduler/post_task.h"
 #include "chrome/browser/browser_process.h"
+#include "chrome/browser/chromeos/arc/arc_migration_constants.h"
 #include "chrome/browser/chromeos/login/ui/login_feedback.h"
 #include "chrome/browser/lifetime/application_lifetime.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/grit/generated_resources.h"
 #include "chromeos/chromeos_switches.h"
 #include "chromeos/cryptohome/async_method_caller.h"
 #include "chromeos/cryptohome/homedir_methods.h"
 #include "chromeos/dbus/cryptohome_client.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/dbus/power_manager/power_supply_properties.pb.h"
 #include "chromeos/dbus/power_manager_client.h"
 #include "components/login/localized_values_builder.h"
 #include "components/user_manager/user_manager.h"
 #include "content/public/browser/browser_thread.h"
 #include "device/power_save_blocker/power_save_blocker.h"
 #include "ui/base/text/bytes_formatting.h"
 
 namespace {
 
 constexpr char kJsScreenPath[] = "login.EncryptionMigrationScreen";
 
 // Path to the mount point to check the available space.
 constexpr char kCheckStoragePath[] = "/home";
 
 // The minimum size of available space to start the migration.
 constexpr int64_t kMinimumAvailableStorage = 10LL * 1024 * 1024;  // 10MB

[fukino, 2017/05/24 08:15:32]

optional nit: Maybe we should move kMinimumAvailableStorage to
arc_migration_constants.h, too?

[kinaba, 2017/05/24 21:58:06]

Done.

 
-// The minimum battery level to start the migration.
-constexpr double kMinimumBatteryPercent = 30;
-
 // JS API callbacks names.
 constexpr char kJsApiStartMigration[] = "startMigration";
 constexpr char kJsApiSkipMigration[] = "skipMigration";
 constexpr char kJsApiRequestRestart[] = "requestRestart";
 constexpr char kJsApiOpenFeedbackDialog[] = "openFeedbackDialog";
 
 // UMA names.
 constexpr char kUmaNameFirstScreen[] = "Cryptohome.MigrationUI.FirstScreen";
 constexpr char kUmaNameUserChoice[] = "Cryptohome.MigrationUI.UserChoice";
 constexpr char kUmaNameConsumedBatteryPercent[] =
@@ skipping 152 matching lines @@
   AddCallback(kJsApiRequestRestart,
               &EncryptionMigrationScreenHandler::HandleRequestRestart);
   AddCallback(kJsApiOpenFeedbackDialog,
               &EncryptionMigrationScreenHandler::HandleOpenFeedbackDialog);
 }
 
 void EncryptionMigrationScreenHandler::PowerChanged(
     const power_manager::PowerSupplyProperties& proto) {
   current_battery_percent_ = proto.battery_percent();
   CallJS("setBatteryState", current_battery_percent_,
-         current_battery_percent_ >= kMinimumBatteryPercent,
+         current_battery_percent_ >= arc::kMigrationMinimumBatteryPercent,
          proto.battery_state() ==
              power_manager::PowerSupplyProperties_BatteryState_CHARGING);
 
   // If the migration was already requested and the bettery level is enough now,
   // The migration should start immediately.
-  if (current_battery_percent_ >= kMinimumBatteryPercent &&
+  if (current_battery_percent_ >= arc::kMigrationMinimumBatteryPercent &&
       should_migrate_on_enough_battery_) {
     should_migrate_on_enough_battery_ = false;
     StartMigration();
   }
 }
 
 void EncryptionMigrationScreenHandler::HandleStartMigration() {
   RecordUserChoice(UserChoice::USER_CHOICE_UPDATE);
   WaitBatteryAndMigrate();
 }
@@ skipping 64 matching lines @@
   } else {
     RecordFirstScreen(FirstScreen::FIRST_SCREEN_LOW_STORAGE);
     CallJS("setAvailableSpaceInString", ui::FormatBytes(size));
     CallJS("setNecessarySpaceInString",
            ui::FormatBytes(kMinimumAvailableStorage));
     UpdateUIState(UIState::NOT_ENOUGH_STORAGE);
   }
 }
 
 void EncryptionMigrationScreenHandler::WaitBatteryAndMigrate() {
-  if (current_battery_percent_ >= kMinimumBatteryPercent) {
+  if (current_battery_percent_ >= arc::kMigrationMinimumBatteryPercent) {
     StartMigration();
     return;
   }
   UpdateUIState(UIState::READY);
 
   should_migrate_on_enough_battery_ = true;
   DBusThreadManager::Get()->GetPowerManagerClient()->RequestStatusUpdate();
 }
 
 void EncryptionMigrationScreenHandler::StartMigration() {
@@ skipping 123 matching lines @@
 }
 
 void EncryptionMigrationScreenHandler::OnMigrationRequested(bool success) {
   if (!success) {
     LOG(ERROR) << "Requesting MigrateToDircrypto failed.";
     UpdateUIState(UIState::MIGRATION_FAILED);
   }
 }
 
 }  // namespace chromeos