Fix IsPrecachingAllowed() to check Sync instead of Data Saver.

components/precache/content/precache_manager_factory.cc

-// Copyright 2013 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/precache/content/precache_manager_factory.h"
-
-#include "components/keyed_service/content/browser_context_dependency_manager.h"
-#include "components/precache/content/precache_manager.h"
-#include "content/public/browser/browser_context.h"
-
-namespace precache {
-
-// static
-PrecacheManager* PrecacheManagerFactory::GetForBrowserContext(
-    content::BrowserContext* browser_context) {
-  return static_cast<PrecacheManager*>(
-      GetInstance()->GetServiceForBrowserContext(browser_context, true));
-}
-
-// static
-PrecacheManagerFactory* PrecacheManagerFactory::GetInstance() {
-  return Singleton<PrecacheManagerFactory>::get();
-}
-
-PrecacheManagerFactory::PrecacheManagerFactory()
-    : BrowserContextKeyedServiceFactory(
-          "PrecacheManager", BrowserContextDependencyManager::GetInstance()) {}
-
-PrecacheManagerFactory::~PrecacheManagerFactory() {}
-
-KeyedService* PrecacheManagerFactory::BuildServiceInstanceFor(
-    content::BrowserContext* browser_context) const {
-  return new PrecacheManager(browser_context);
-}
-
-}  // namespace precache