Minor fixes in proxy configuration on iOS.

net/proxy/proxy_service.cc

 // Copyright (c) 2012 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 "net/proxy/proxy_service.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 1305 matching lines @@
   ApplyProxyConfigIfAvailable();
 }
 
 // static
 ProxyConfigService* ProxyService::CreateSystemProxyConfigService(
     base::SingleThreadTaskRunner* io_thread_task_runner,
     MessageLoop* file_loop) {
 #if defined(OS_WIN)
   return new ProxyConfigServiceWin();
 #elif defined(OS_IOS)
-  return new ProxyConfigServiceIOS(io_thread_task_runner);
+  return new ProxyConfigServiceIOS();
 #elif defined(OS_MACOSX)
   return new ProxyConfigServiceMac(io_thread_task_runner);
 #elif defined(OS_CHROMEOS)
   LOG(ERROR) << "ProxyConfigService for ChromeOS should be created in "
              << "profile_io_data.cc::CreateProxyConfigService and this should "
              << "be used only for examples.";
   return new UnsetProxyConfigService;
 #elif defined(OS_LINUX)
   ProxyConfigServiceLinux* linux_config_service =
       new ProxyConfigServiceLinux();
@@ skipping 209 matching lines @@
     OnCompletion(result_);
   }
 }
 
 void SyncProxyServiceHelper::OnCompletion(int rv) {
   result_ = rv;
   event_.Signal();
 }
 
 }  // namespace net