Remove HTTP pipelining support.

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 45 matching lines @@
     base::FilePath path;
   };
 
   struct NET_EXPORT HttpNetworkSessionParams {
     HttpNetworkSessionParams();
     ~HttpNetworkSessionParams();
 
     // These fields mirror those in net::HttpNetworkSession::Params;
     bool ignore_certificate_errors;
     HostMappingRules* host_mapping_rules;
-    bool http_pipelining_enabled;
     uint16 testing_fixed_http_port;
     uint16 testing_fixed_https_port;
     std::string trusted_spdy_proxy;
   };
 
   URLRequestContextBuilder();
   ~URLRequestContextBuilder();
 
   void set_proxy_config_service(ProxyConfigService* proxy_config_service);
 
@@ skipping 97 matching lines @@
   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_