Move ProxyServiceFactory to components/proxy_service/ios.

ios/chrome/browser/net/proxy_service_factory.cc

-// Copyright 2015 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 "ios/chrome/browser/net/proxy_service_factory.h"
-
-#include <utility>
-
-#include "base/memory/ptr_util.h"
-#include "components/proxy_config/pref_proxy_config_tracker_impl.h"
-#include "ios/web/public/web_thread.h"
-#include "net/proxy/proxy_config_service.h"
-#include "net/proxy/proxy_service.h"
-
-namespace ios {
-
-// static
-std::unique_ptr<net::ProxyConfigService>
-ProxyServiceFactory::CreateProxyConfigService(PrefProxyConfigTracker* tracker) {
-  std::unique_ptr<net::ProxyConfigService> base_service(
-      net::ProxyService::CreateSystemProxyConfigService(
-          web::WebThread::GetTaskRunnerForThread(web::WebThread::IO),
-          web::WebThread::GetTaskRunnerForThread(web::WebThread::FILE)));
-  return tracker->CreateTrackingProxyConfigService(std::move(base_service));
-}
-
-// static
-std::unique_ptr<PrefProxyConfigTracker>
-ProxyServiceFactory::CreatePrefProxyConfigTrackerOfProfile(
-    PrefService* browser_state_prefs,
-    PrefService* local_state_prefs) {
-  return base::MakeUnique<PrefProxyConfigTrackerImpl>(
-      browser_state_prefs,
-      web::WebThread::GetTaskRunnerForThread(web::WebThread::IO));
-}
-
-// static
-std::unique_ptr<PrefProxyConfigTracker>
-ProxyServiceFactory::CreatePrefProxyConfigTrackerOfLocalState(
-    PrefService* local_state_prefs) {
-  return base::MakeUnique<PrefProxyConfigTrackerImpl>(
-      local_state_prefs,
-      web::WebThread::GetTaskRunnerForThread(web::WebThread::IO));
-}
-
-// static
-std::unique_ptr<net::ProxyService> ProxyServiceFactory::CreateProxyService(
-    net::NetLog* net_log,
-    net::URLRequestContext* context,
-    net::NetworkDelegate* network_delegate,
-    std::unique_ptr<net::ProxyConfigService> proxy_config_service,
-    bool quick_check_enabled) {
-  DCHECK_CURRENTLY_ON(web::WebThread::IO);
-  std::unique_ptr<net::ProxyService> proxy_service(
-      net::ProxyService::CreateUsingSystemProxyResolver(
-          std::move(proxy_config_service), net_log));
-  proxy_service->set_quick_check_enabled(quick_check_enabled);
-  return proxy_service;
-}
-
-}  // namespace ios