Data Reduction Proxy: Remove duplicate functions

components/data_reduction_proxy/core/browser/data_reduction_proxy_mutable_config_values.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 COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_DATA_REDUCTION_PROXY_MUTABLE_CONFIG_VALUES_H_
 #define COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_DATA_REDUCTION_PROXY_MUTABLE_CONFIG_VALUES_H_
 
 #include <memory>
 #include <vector>
 
@@ skipping 22 matching lines @@
 
   // Updates |proxies_for_http_| with the provided values.
   // Virtual for testing.
   virtual void UpdateValues(
       const std::vector<DataReductionProxyServer>& proxies_for_http);
 
   // Invalidates |this| by clearing the stored Data Reduction Proxy servers.
   void Invalidate();
 
   // Overrides of |DataReductionProxyConfigValues|
-  bool promo_allowed() const override;
-  bool holdback() const override;
   const std::vector<DataReductionProxyServer>& proxies_for_http()
       const override;
   const GURL& secure_proxy_check_url() const override;
 
  protected:
   DataReductionProxyMutableConfigValues();
 
  private:
-  bool promo_allowed_;
-  bool holdback_;
   std::vector<DataReductionProxyServer> proxies_for_http_;
   GURL secure_proxy_check_url_;
 
   // Permits use of locally specified Data Reduction Proxy servers instead of
   // ones specified from the Data Saver API.
   bool use_override_proxies_for_http_;
   std::vector<DataReductionProxyServer> override_proxies_for_http_;
 
   // Enforce usage on the IO thread.
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(DataReductionProxyMutableConfigValues);
 };
 
 }  // namespace data_reduction_proxy
 #endif  // COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_DATA_REDUCTION_PROXY_MUTABLE_CONFIG_VALUES_H_