Update from https://crrev.com/304418

net/url_request/url_request_context_builder.h

 // Copyright (c) 2012 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.
 
 // This class is useful for building a simple URLRequestContext. Most creators
 // of new URLRequestContexts should use this helper class to construct it. Call
 // any configuration params, and when done, invoke Build() to construct the
 // URLRequestContext. This URLRequestContext will own all its own storage.
 //
 // URLRequestContextBuilder and its associated params classes are initially
@@ skipping 156 matching lines @@
   void set_quic_connection_options(
       const QuicTagVector& quic_connection_options) {
     http_network_session_params_.quic_connection_options =
         quic_connection_options;
   }
 
   void set_throttling_enabled(bool throttling_enabled) {
     throttling_enabled_ = throttling_enabled;
   }
 
+  void set_channel_id_enabled(bool enable) {
+    channel_id_enabled_ = enable;
+  }
+
   URLRequestContext* Build();
 
  private:
   struct NET_EXPORT SchemeFactory {
     SchemeFactory(const std::string& scheme,
                   net::HttpAuthHandlerFactory* factory);
     ~SchemeFactory();
 
     std::string scheme;
     net::HttpAuthHandlerFactory* factory;
   };
 
   std::string accept_language_;
   std::string user_agent_;
   // Include support for data:// requests.
   bool data_enabled_;
 #if !defined(DISABLE_FILE_SUPPORT)
   // Include support for file:// requests.
   bool file_enabled_;
 #endif
 #if !defined(DISABLE_FTP_SUPPORT)
   // Include support for ftp:// requests.
   bool ftp_enabled_;
 #endif
   bool http_cache_enabled_;
   bool throttling_enabled_;
+  bool channel_id_enabled_;
 
   HttpCacheParams http_cache_params_;
   HttpNetworkSessionParams http_network_session_params_;
   base::FilePath transport_security_persister_path_;
   scoped_ptr<NetLog> net_log_;
   scoped_ptr<HostResolver> host_resolver_;
   scoped_ptr<ProxyConfigService> proxy_config_service_;
   scoped_ptr<ProxyService> proxy_service_;
   scoped_ptr<NetworkDelegate> network_delegate_;
   scoped_ptr<FtpTransactionFactory> ftp_transaction_factory_;
   std::vector<SchemeFactory> extra_http_auth_handlers_;
 
   DISALLOW_COPY_AND_ASSIGN(URLRequestContextBuilder);
 };
 
 }  // namespace net
 
 #endif  // NET_URL_REQUEST_URL_REQUEST_CONTEXT_BUILDER_H_