[iOS] More provider API for data reduction proxy settings

ios/public/test/test_keyed_service_provider.h

 // 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.
 
 #ifndef IOS_PUBLIC_TEST_TEST_KEYED_SERVICE_PROVIDER_H_
 #define IOS_PUBLIC_TEST_TEST_KEYED_SERVICE_PROVIDER_H_
 
 #include "base/macros.h"
 #include "ios/public/provider/chrome/browser/keyed_service_provider.h"
 
@@ skipping 12 matching lines @@
 #endif
   KeyedServiceBaseFactory* GetSyncServiceFactory() override;
   sync_driver::SyncService* GetSyncServiceForBrowserState(
       ChromeBrowserState* browser_state) override;
   sync_driver::SyncService* GetSyncServiceForBrowserStateIfExists(
       ChromeBrowserState* browser_state) override;
   KeyedServiceBaseFactory* GetProfileInvalidationProviderFactory() override;
   invalidation::ProfileInvalidationProvider*
   GetProfileInvalidationProviderForBrowserState(
       ios::ChromeBrowserState* browser_state) override;
+  KeyedServiceBaseFactory* GetDataReductionProxySettingsFactory() override;
   data_reduction_proxy::DataReductionProxySettings*
   GetDataReductionProxySettingsForBrowserState(
       ios::ChromeBrowserState* browser_state) override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(TestKeyedServiceProvider);
 };
 
 }  // namespace ios
 
 #endif  // IOS_PUBLIC_TEST_TEST_KEYED_SERVICE_PROVIDER_H_