[iOS] More provider API for data reduction proxy settings

ios/public/provider/chrome/browser/keyed_service_provider.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/public/provider/chrome/browser/keyed_service_provider.h"
 
 #include "components/autofill/core/browser/webdata/autofill_webdata_service.h"
 
 namespace ios {
 namespace {
@@ skipping 11 matching lines @@
   return g_keyed_service_provider;
 }
 
 KeyedServiceProvider::KeyedServiceProvider() {
 }
 
 KeyedServiceProvider::~KeyedServiceProvider() {
 }
 
 void KeyedServiceProvider::AssertKeyedFactoriesBuilt() {
+  GetDataReductionProxySettingsFactory();
 #if defined(ENABLE_CONFIGURATION_POLICY)
   GetManagedBookmarkServiceFactory();
 #endif
   GetProfileInvalidationProviderFactory();
   GetSyncServiceFactory();
 }
 
 }  // namespace ios