Implement Drain() on HttpPipelinedStream.

net/http/http_pipelined_connection_impl.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_PIPELINED_CONNECTION_IMPL_H_
 #define NET_HTTP_HTTP_PIPELINED_CONNECTION_IMPL_H_
 #pragma once
 
 #include <map>
 #include <queue>
@@ skipping 10 matching lines @@
 #include "net/base/upload_data_stream.h"
 #include "net/http/http_pipelined_connection.h"
 #include "net/http/http_request_info.h"
 #include "net/http/http_stream_parser.h"
 #include "net/proxy/proxy_info.h"
 
 namespace net {
 
 class ClientSocketHandle;
 class GrowableIOBuffer;
+class HttpNetworkSession;
 class HttpRequestHeaders;
 class HttpResponseInfo;
 class IOBuffer;
 class SSLCertRequestInfo;
 class SSLInfo;
 
 // This class manages all of the state for a single pipelined connection. It
 // tracks the order that HTTP requests are sent and enforces that the
 // subsequent reads occur in the appropriate order.
 //
@@ skipping 69 matching lines @@
   bool IsConnectionReused(int pipeline_id) const;
 
   void SetConnectionReused(int pipeline_id);
 
   void GetSSLInfo(int pipeline_id,
                   SSLInfo* ssl_info);
 
   void GetSSLCertRequestInfo(int pipeline_id,
                              SSLCertRequestInfo* cert_request_info);
 
+  // Attempts to drain the response body for |stream| so that the pipeline may
+  // be reused.
+  void Drain(HttpPipelinedStream* stream, HttpNetworkSession* session);
+
  private:
   enum StreamState {
     STREAM_CREATED,
     STREAM_BOUND,
     STREAM_SENDING,
     STREAM_SENT,
     STREAM_READ_PENDING,
     STREAM_ACTIVE,
     STREAM_CLOSED,
     STREAM_READ_EVICTED,
@@ skipping 162 matching lines @@
   int active_read_id_;
   bool read_still_on_call_stack_;
   OldCompletionCallbackImpl<HttpPipelinedConnectionImpl> read_io_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(HttpPipelinedConnectionImpl);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_PIPELINED_CONNECTION_IMPL_H_