Basic HTTP pipelining support

net/http/http_network_transaction.h

 // Copyright (c) 2011 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_NETWORK_TRANSACTION_H_
 #define NET_HTTP_HTTP_NETWORK_TRANSACTION_H_
 #pragma once
 
 #include <string>
 
@@ skipping 147 matching lines @@
   // Called to possibly recover from an SSL handshake error.  Sets next_state_
   // and returns OK if recovering from the error.  Otherwise, the same error
   // code is returned.
   int HandleSSLHandshakeError(int error);
 
   // Called to possibly recover from the given error.  Sets next_state_ and
   // returns OK if recovering from the error.  Otherwise, the same error code
   // is returned.
   int HandleIOError(int error);
 
+  // Called when an ERR_PIPELINE_EVICTION is returned from the stream.  Attempts
+  // to restart the transaction from the beginning.
+  int RestartAfterPipelineEviction();
+
   // Gets the response headers from the HttpStream.
   HttpResponseHeaders* GetResponseHeaders() const;
 
   // Called when we reached EOF or got an error.  Returns true if we should
   // resend the request.  |error| is OK when we reached EOF.
   bool ShouldResendRequest(int error) const;
 
   // Resets the connection and the request headers for resend.  Called when
   // ShouldResendRequest() is true.
   void ResetConnectionAndRequestForResend();
@@ skipping 93 matching lines @@
   // True when the tunnel is in the process of being established - we can't
   // read from the socket until the tunnel is done.
   bool establishing_tunnel_;
 
   DISALLOW_COPY_AND_ASSIGN(HttpNetworkTransaction);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_NETWORK_TRANSACTION_H_