Basic HTTP pipelining support

net/base/net_log_event_type_list.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.
 
 // NOTE: No header guards are used, since this file is intended to be expanded
 // directly into net_log.h. DO NOT include this file anywhere else.
 
 // In the event of a failure, a many end events will have a |net_error|
 // parameter with the integer error code associated with the failure.  Most
 // of these parameters are not individually documented.
@@ skipping 827 matching lines @@
 //   }
 EVENT_TYPE(HTTP_TRANSACTION_READ_RESPONSE_HEADERS)
 
 // Measures the time to read the entity body from the server.
 EVENT_TYPE(HTTP_TRANSACTION_READ_BODY)
 
 // Measures the time taken to read the response out of the socket before
 // restarting for authentication, on keep alive connections.
 EVENT_TYPE(HTTP_TRANSACTION_DRAIN_BODY_FOR_AUTH_RESTART)
 
+// This event is sent when we try to restart a transaction after an error.
+// The following parameters are attached:
+//   {
+//     "net_error": <The net error code integer for the failure>,
+//   }
+EVENT_TYPE(HTTP_TRANSACTION_RESTART_AFTER_ERROR)
+
 // ------------------------------------------------------------------------
 // SpdySession
 // ------------------------------------------------------------------------
 
 // The start/end of a SpdySession.
 //   {
 //     "host": <The host-port string>,
 //     "proxy": <The Proxy PAC string>,
 //   }
 EVENT_TYPE(SPDY_SESSION)
@@ skipping 457 matching lines @@
 // This event is created when we start a CertVerifier job.
 EVENT_TYPE(CERT_VERIFIER_JOB)
 
 // This event is created when a CertVerifier request attaches to a job.
 //
 // The event parameters are:
 //   {
 //      "source_dependency": <Source identifer for the job we are bound to>,
 //   }
 EVENT_TYPE(CERT_VERIFIER_REQUEST_BOUND_TO_JOB)