Data Reduction Proxy: Remove duplicate functions

components/data_reduction_proxy/core/browser/data_reduction_proxy_config.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_CONFIG_H_
 #define COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_DATA_REDUCTION_PROXY_CONFIG_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 168 matching lines @@
   // expired. If proxy is bypassed, retry_delay (if not NULL) returns the delay
   // of proxy_server. If proxy is not bypassed, retry_delay is not assigned.
   bool IsProxyBypassed(const net::ProxyRetryInfoMap& retry_map,
                        const net::ProxyServer& proxy_server,
                        base::TimeDelta* retry_delay) const;
 
   // Check whether the |proxy_rules| contain any of the data reduction proxies.
   virtual bool ContainsDataReductionProxy(
       const net::ProxyConfig::ProxyRules& proxy_rules) const;
 
-  // Returns true if the Data Reduction Proxy promo may be shown. This is not
-  // tied to whether the Data Reduction Proxy is enabled.
-  bool promo_allowed() const;
-
   // Sets |lofi_off_| to true.
   void SetLoFiModeOff();
 
   // Returns |lofi_off_|.
   bool lofi_off() const { return lofi_off_; }
 
   // Returns true when Lo-Fi Previews should be activated. Records metrics for
   // Lo-Fi state changes. |request| is used to get the network quality estimator
   // from the URLRequestContext. |previews_decider| is used to check if
   // |request| is locally blacklisted.
@@ skipping 265 matching lines @@
   bool is_captive_portal_;
 
   base::WeakPtrFactory<DataReductionProxyConfig> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DataReductionProxyConfig);
 };
 
 }  // namespace data_reduction_proxy
 
 #endif  // COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_DATA_REDUCTION_PROXY_CONFIG_H_