Remove HTTP pipelining support.

net/http/http_stream_factory.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.
 
 #ifndef NET_HTTP_HTTP_STREAM_FACTORY_H_
 #define NET_HTTP_HTTP_STREAM_FACTORY_H_
 
 #include <list>
 #include <string>
 
@@ skipping 198 matching lines @@
       WebSocketHandshakeStreamBase::CreateHelper* create_helper,
       const BoundNetLog& net_log) = 0;
 
   // Requests that enough connections for |num_streams| be opened.
   virtual void PreconnectStreams(int num_streams,
                                  const HttpRequestInfo& info,
                                  RequestPriority priority,
                                  const SSLConfig& server_ssl_config,
                                  const SSLConfig& proxy_ssl_config) = 0;
 
-  // If pipelining is supported, creates a Value summary of the currently active
-  // pipelines. Caller assumes ownership of the returned value. Otherwise,
-  // returns an empty Value.
-  virtual base::Value* PipelineInfoToValue() const = 0;
-
   virtual const HostMappingRules* GetHostMappingRules() const = 0;
 
   // Static settings
 
   // Reset all static settings to initialized values. Used to init test suite.
   static void ResetStaticSettingsToInit();
 
   // Turns spdy on or off.
   // TODO(mmenke):  Figure out if this can be made a property of the
   //                HttpNetworkSession.
   static void set_spdy_enabled(bool value) {
     spdy_enabled_ = value;
   }
   static bool spdy_enabled() { return spdy_enabled_; }
 
  protected:
   HttpStreamFactory();
 
  private:
   static bool spdy_enabled_;
 
   DISALLOW_COPY_AND_ASSIGN(HttpStreamFactory);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_STREAM_FACTORY_H_