[iOS] More provider API for data reduction proxy settings

ios/public/test/test_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/test/test_keyed_service_provider.h"
 
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/singleton.h"
@@ skipping 89 matching lines @@
 TestKeyedServiceProvider::GetProfileInvalidationProviderFactory() {
   return MissingServiceKeyedServiceFactory::GetInstance();
 }
 
 invalidation::ProfileInvalidationProvider*
 TestKeyedServiceProvider::GetProfileInvalidationProviderForBrowserState(
     ios::ChromeBrowserState* browser_state) {
   return nullptr;
 }
 
+KeyedServiceBaseFactory*
+TestKeyedServiceProvider::GetDataReductionProxySettingsFactory() {
+  return MissingServiceKeyedServiceFactory::GetInstance();
+}
+
 data_reduction_proxy::DataReductionProxySettings*
 TestKeyedServiceProvider::GetDataReductionProxySettingsForBrowserState(
     ios::ChromeBrowserState* browser_state) {
   return nullptr;
 }
 
 }  // namespace ios