Remove unused ArcUserDataService.

components/arc/user_data/arc_user_data_service.cc

-// Copyright 2016 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/arc/user_data/arc_user_data_service.h"
-
-#include <utility>
-
-#include "base/command_line.h"
-#include "chromeos/chromeos_switches.h"
-#include "chromeos/cryptohome/cryptohome_parameters.h"
-#include "chromeos/dbus/dbus_thread_manager.h"
-#include "components/prefs/pref_member.h"
-#include "components/signin/core/account_id/account_id.h"
-#include "components/user_manager/user_manager.h"
-
-namespace arc {
-
-ArcUserDataService::ArcUserDataService(
-    ArcBridgeService* bridge_service,
-    std::unique_ptr<BooleanPrefMember> arc_enabled_pref,
-    const AccountId& account_id)
-    : ArcService(bridge_service),
-      arc_enabled_pref_(std::move(arc_enabled_pref)),
-      primary_user_account_id_(account_id),
-      weak_ptr_factory_(this) {
-  arc_bridge_service()->AddObserver(this);
-  pref_change_registrar_.Init(arc_enabled_pref_->prefs());
-  pref_change_registrar_.Add(
-      arc_enabled_pref_->GetPrefName(),
-      base::Bind(&ArcUserDataService::OnOptInPreferenceChanged,
-                 weak_ptr_factory_.GetWeakPtr()));
-  WipeIfRequired();
-}
-
-ArcUserDataService::~ArcUserDataService() {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  arc_bridge_service()->RemoveObserver(this);
-}
-
-void ArcUserDataService::OnBridgeStopped(ArcBridgeService::StopReason reason) {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  const AccountId& account_id =
-      user_manager::UserManager::Get()->GetPrimaryUser()->GetAccountId();
-  if (account_id != primary_user_account_id_) {
-    LOG(ERROR) << "User preferences not loaded for "
-               << primary_user_account_id_.GetUserEmail()
-               << ", but current primary user is " << account_id.GetUserEmail();
-    primary_user_account_id_ = EmptyAccountId();
-    return;
-  }
-  WipeIfRequired();
-}
-
-void ArcUserDataService::RequireUserDataWiped(const ArcDataCallback& callback) {
-  VLOG(1) << "Require ARC user data to be wiped.";
-  arc_user_data_wipe_required_ = true;
-  callback_ = callback;
-}
-
-void ArcUserDataService::WipeIfRequired() {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  if (!arc_bridge_service()->stopped()) {
-    LOG(ERROR) << "ARC instance not stopped, user data can't be wiped";
-    return;
-  }
-  if ((arc_enabled_pref_->GetValue() && !arc_user_data_wipe_required_) ||
-      base::CommandLine::ForCurrentProcess()->HasSwitch(
-          chromeos::switches::kDisableArcDataWipe)) {
-    return;
-  }
-  VLOG(1) << "Wipe ARC user data.";
-  arc_user_data_wipe_required_ = false;
-  const cryptohome::Identification cryptohome_id(primary_user_account_id_);
-  chromeos::SessionManagerClient* session_manager_client =
-      chromeos::DBusThreadManager::Get()->GetSessionManagerClient();
-  session_manager_client->RemoveArcData(cryptohome_id, callback_);
-  callback_.Reset();
-}
-
-void ArcUserDataService::OnOptInPreferenceChanged() {
-  if (!arc_enabled_pref_->GetValue())
-    arc_user_data_wipe_required_ = true;
-}
-
-}  // namespace arc