[Sync] Move sync error controller to sync driver component

chrome/browser/sync/sync_error_controller.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 "chrome/browser/sync/sync_error_controller.h"
-
-#include "chrome/browser/sync/profile_sync_service.h"
-#include "chrome/browser/sync/profile_sync_service_factory.h"
-
-SyncErrorController::SyncErrorController(ProfileSyncService* service)
-    : service_(service) {
-  DCHECK(service_);
-}
-
-SyncErrorController::~SyncErrorController() {
-}
-
-bool SyncErrorController::HasError() {
-  return service_->HasSyncSetupCompleted() &&
-      service_->IsPassphraseRequired() &&
-      service_->IsPassphraseRequiredForDecryption();
-}
-
-void SyncErrorController::AddObserver(Observer* observer) {
-  observer_list_.AddObserver(observer);
-}
-
-void SyncErrorController::RemoveObserver(Observer* observer) {
-  observer_list_.RemoveObserver(observer);
-}
-
-void SyncErrorController::OnStateChanged() {
-  FOR_EACH_OBSERVER(Observer,
-                    observer_list_,
-                    OnErrorChanged());
-}