Revert 113338 - Revert 113315 (speculative revert for http://crbug.com/106657)

net/http/http_pipelined_host_capability.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_HOST_CAPABILITY_H_
 #define NET_HTTP_HTTP_PIPELINED_HOST_CAPABILITY_H_
 #pragma once
 
 namespace net {
 
 // These values are serialized in Preferences. Do not change these values and
 // only add new ones at the end.
 enum HttpPipelinedHostCapability {
   PIPELINE_UNKNOWN = 0,
   PIPELINE_INCAPABLE = 1,
   PIPELINE_CAPABLE = 2,
   PIPELINE_PROBABLY_CAPABLE = 3,  // We are using pipelining, but haven't
                                   // processed enough requests to record this
                                   // host as known to be capable.
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_PIPELINED_HOST_CAPABILITY_H_