Remove HTTP pipelining support.

net/http/http_network_transaction.cc

 // 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.
 
 #include "net/http/http_network_transaction.h"
 
 #include <set>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 1422 matching lines @@
     // ERR_EMPTY_RESPONSE. This may still be close/reuse race if the socket was
     // preconnected but failed to be used before the server timed it out.
     case ERR_EMPTY_RESPONSE:
       if (ShouldResendRequest()) {
         net_log_.AddEventWithNetErrorCode(
             NetLog::TYPE_HTTP_TRANSACTION_RESTART_AFTER_ERROR, error);
         ResetConnectionAndRequestForResend();
         error = OK;
       }
       break;
-    case ERR_PIPELINE_EVICTION:
-      if (!session_->force_http_pipelining()) {
-        net_log_.AddEventWithNetErrorCode(
-            NetLog::TYPE_HTTP_TRANSACTION_RESTART_AFTER_ERROR, error);
-        ResetConnectionAndRequestForResend();
-        error = OK;
-      }
-      break;
     case ERR_SPDY_PING_FAILED:
     case ERR_SPDY_SERVER_REFUSED_STREAM:
     case ERR_QUIC_HANDSHAKE_FAILED:
       net_log_.AddEventWithNetErrorCode(
           NetLog::TYPE_HTTP_TRANSACTION_RESTART_AFTER_ERROR, error);
       ResetConnectionAndRequestForResend();
       error = OK;
       break;
   }
   return error;
@@ skipping 146 matching lines @@
       description = base::StringPrintf("Unknown state 0x%08X (%u)", state,
                                        state);
       break;
   }
   return description;
 }
 
 #undef STATE_CASE
 
 }  // namespace net