[Sync] Create UserEventService.

chrome/browser/sync/user_event_service_factory.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/sync/user_event_service_factory.h"
+
+#include <memory>
+#include <utility>
+
+#include "base/memory/ptr_util.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/sync/profile_sync_service_factory.h"
+#include "chrome/common/channel_info.h"
+#include "components/browser_sync/profile_sync_service.h"
+#include "components/keyed_service/content/browser_context_dependency_manager.h"
+#include "components/sync/base/model_type.h"
+#include "components/sync/base/report_unrecoverable_error.h"
+#include "components/sync/user_events/user_event_service.h"
+#include "components/sync/user_events/user_event_sync_bridge.h"
+
+namespace browser_sync {
+
+// static
+UserEventServiceFactory* UserEventServiceFactory::GetInstance() {
+  return base::Singleton<UserEventServiceFactory>::get();
+}
+
+// static
+syncer::UserEventService* UserEventServiceFactory::GetForProfile(
+    Profile* profile) {
+  return static_cast<syncer::UserEventService*>(
+      GetInstance()->GetServiceForBrowserContext(profile, true));
+}
+
+UserEventServiceFactory::UserEventServiceFactory()
+    : BrowserContextKeyedServiceFactory(
+          "UserEventService",
+          BrowserContextDependencyManager::GetInstance()) {}
+
+UserEventServiceFactory::~UserEventServiceFactory() {}
+
+KeyedService* UserEventServiceFactory::BuildServiceInstanceFor(
+    content::BrowserContext* context) const {
+  Profile* profile = Profile::FromBrowserContext(context);
+  syncer::ModelTypeStoreFactory store_factory =
+      browser_sync::ProfileSyncService::GetModelTypeStoreFactory(
+          syncer::USER_EVENTS, profile->GetPath());
+  syncer::ModelTypeSyncBridge::ChangeProcessorFactory processor_factory =
+      base::BindRepeating(&syncer::ModelTypeChangeProcessor::Create,
+                          base::BindRepeating(&syncer::ReportUnrecoverableError,
+                                              chrome::GetChannel()));
+  auto bridge = base::MakeUnique<syncer::UserEventSyncBridge>(
+      std::move(store_factory), std::move(processor_factory));
+  return new syncer::UserEventService(
+      ProfileSyncServiceFactory::GetForProfile(profile), std::move(bridge));
+}
+
+}  // namespace browser_sync