Convert Pass()→std::move() for iOS build.

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 "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
 scoped_ptr<net::ProxyConfigService>
 ProxyServiceFactory::CreateProxyConfigService(PrefProxyConfigTracker* tracker) {
   scoped_ptr<net::ProxyConfigService> base_service(
       net::ProxyService::CreateSystemProxyConfigService(
           web::WebThread::GetTaskRunnerForThread(web::WebThread::IO),
           web::WebThread::GetTaskRunnerForThread(web::WebThread::FILE)));
-  return tracker->CreateTrackingProxyConfigService(base_service.Pass()).Pass();
+  return tracker->CreateTrackingProxyConfigService(std::move(base_service));
 }
 
 // static
 scoped_ptr<PrefProxyConfigTracker>
 ProxyServiceFactory::CreatePrefProxyConfigTrackerOfProfile(
     PrefService* browser_state_prefs,
     PrefService* local_state_prefs) {
   return make_scoped_ptr(new PrefProxyConfigTrackerImpl(
       browser_state_prefs,
       web::WebThread::GetTaskRunnerForThread(web::WebThread::IO)));
@@ skipping 11 matching lines @@
 // static
 scoped_ptr<net::ProxyService> ProxyServiceFactory::CreateProxyService(
     net::NetLog* net_log,
     net::URLRequestContext* context,
     net::NetworkDelegate* network_delegate,
     scoped_ptr<net::ProxyConfigService> proxy_config_service,
     bool quick_check_enabled) {
   DCHECK_CURRENTLY_ON_WEB_THREAD(web::WebThread::IO);
   scoped_ptr<net::ProxyService> proxy_service(
       net::ProxyService::CreateUsingSystemProxyResolver(
-          proxy_config_service.Pass(), 0, net_log));
+          std::move(proxy_config_service), 0, net_log));
   proxy_service->set_quick_check_enabled(quick_check_enabled);
-  return proxy_service.Pass();
+  return proxy_service;
 }
 
 }  // namespace ios