Return chrome-proxy-ect header code (post M59 branch)

components/data_reduction_proxy/core/browser/data_reduction_proxy_network_delegate.h

 // Copyright 2014 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_NETWORK_DELEGATE_H_
 #define COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_DATA_REDUCTION_PROXY_NETWORK_DELEGATE_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 139 matching lines @@
       const net::ProxyInfo& proxy_info,
       const net::ProxyRetryInfoMap& proxy_retry_info) const;
 
   // May add Brotli to Accept Encoding request header if |proxy_info| contains
   // a proxy server that is expected to support Brotli encoding.
   void MaybeAddBrotliToAcceptEncodingHeader(
       const net::ProxyInfo& proxy_info,
       net::HttpRequestHeaders* request_headers,
       const net::URLRequest& request) const;
 
+  // May add chrome-proxy-ect header to |request_headers| if adding of
+  // chrome-proxy-ect is enabled via field trial and a valid estimate of
+  // network quality is available. This method should be called only when the
+  // resolved proxy for |request| is a data saver proxy.
+  void MaybeAddChromeProxyECTHeader(net::HttpRequestHeaders* request_headers,
+                                    const net::URLRequest& request) const;
+
+  // Removes the chrome-proxy-ect header from |request_headers|.
+  void RemoveChromeProxyECTHeader(
+      net::HttpRequestHeaders* request_headers) const;
+
   // All raw Data Reduction Proxy pointers must outlive |this|.
   DataReductionProxyConfig* data_reduction_proxy_config_;
 
   DataReductionProxyBypassStats* data_reduction_proxy_bypass_stats_;
 
   DataReductionProxyRequestOptions* data_reduction_proxy_request_options_;
 
   DataReductionProxyIOData* data_reduction_proxy_io_data_;
 
   const DataReductionProxyConfigurator* configurator_;
 
   std::unique_ptr<DataUseGroupProvider> data_use_group_provider_;
 
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(DataReductionProxyNetworkDelegate);
 };
 }  // namespace data_reduction_proxy
 
 #endif  // COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_DATA_REDUCTION_PROXY_NETWORK_DELEGATE_H_