[iOS] More provider API for data reduction proxy settings

ios/public/provider/chrome/browser/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_PROVIDER_CHROME_BROWSER_KEYED_SERVICE_PROVIDER_H_
 #define IOS_PUBLIC_PROVIDER_CHROME_BROWSER_KEYED_SERVICE_PROVIDER_H_
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 
@@ skipping 66 matching lines @@
   // Returns the invalidation::ProfileInvalidationProvider factory for
   // dependencies.
   virtual KeyedServiceBaseFactory* GetProfileInvalidationProviderFactory() = 0;
 
   // Returns an instance of invalidation::ProfileInvalidationProvider tied to
   // |browser_state|.
   virtual invalidation::ProfileInvalidationProvider*
   GetProfileInvalidationProviderForBrowserState(
       ChromeBrowserState* browser_state) = 0;
 
+  // Returns the data_reduction_proxy::DataReductionProxySettings factory for
+  // dependencies.
+  virtual KeyedServiceBaseFactory* GetDataReductionProxySettingsFactory() = 0;
+
   // Returns an instance of data_reduction_proxy::DataReductionProxySettings
   // tied to |browser_state|.
   virtual data_reduction_proxy::DataReductionProxySettings*
   GetDataReductionProxySettingsForBrowserState(
       ios::ChromeBrowserState* browser_state) = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(KeyedServiceProvider);
 };
 
 }  // namespace ios
 
 #endif  // IOS_PUBLIC_PROVIDER_CHROME_BROWSER_KEYED_SERVICE_PROVIDER_H_