Remove HTTP pipelining support.

net/base/net_log_event_type_list.h

Index: net/base/net_log_event_type_list.h
diff --git a/net/base/net_log_event_type_list.h b/net/base/net_log_event_type_list.h
index e4f44221ee384d500336c95794e837d733f31071..10d9c593b2f6b1376e5f7e13eb0c44fa044ba52f 100644
--- a/net/base/net_log_event_type_list.h
+++ b/net/base/net_log_event_type_list.h
@@ -1899,38 +1899,6 @@ EVENT_TYPE(CERT_VERIFIER_JOB)
 EVENT_TYPE(CERT_VERIFIER_REQUEST_BOUND_TO_JOB)
 
 // ------------------------------------------------------------------------
-// HttpPipelinedConnection
-// ------------------------------------------------------------------------
-
-// The start/end of a HttpPipelinedConnection.
-//   {
-//     "host_and_port": <The host-port string>,
-//   }
-EVENT_TYPE(HTTP_PIPELINED_CONNECTION)
-
-// This event is created when a pipelined connection finishes sending a request.
-//   {
-//     "source_dependency": <Source id of the requesting stream>,
-//   }
-EVENT_TYPE(HTTP_PIPELINED_CONNECTION_SENT_REQUEST)
-
-// This event is created when a pipelined connection finishes receiving the
-// response headers.
-//   {
-//     "source_dependency": <Source id of the requesting stream>,
-//     "feedback": <The value of HttpPipelinedConnection::Feedback indicating
-//                  pipeline capability>,
-//   }
-EVENT_TYPE(HTTP_PIPELINED_CONNECTION_RECEIVED_HEADERS)
-
-// This event is created when a pipelined stream closes.
-//   {
-//     "source_dependency": <Source id of the requesting stream>,
-//     "must_close": <True if the pipeline must shut down>,
-//   }
-EVENT_TYPE(HTTP_PIPELINED_CONNECTION_STREAM_CLOSED)
-
-// ------------------------------------------------------------------------
 // Download start events.
 // ------------------------------------------------------------------------