Remove insecure QUIC support from Chromium.

net/base/net_error_list.h

 // 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.
 
 // This file intentionally does not have header guards, it's included
 // inside a macro to generate enum values.
 
 // This file contains the list of network errors.
 
 //
@@ skipping 602 matching lines @@
 // There is a QUIC protocol error.
 NET_ERROR(QUIC_PROTOCOL_ERROR, -356)
 
 // The HTTP headers were truncated by an EOF.
 NET_ERROR(RESPONSE_HEADERS_TRUNCATED, -357)
 
 // The QUIC crytpo handshake failed.  This means that the server was unable
 // to read any requests sent, so they may be resent.
 NET_ERROR(QUIC_HANDSHAKE_FAILED, -358)
 
-// An https resource was requested over an insecure QUIC connection.
-NET_ERROR(REQUEST_FOR_SECURE_RESOURCE_OVER_INSECURE_QUIC, -359)
+// Obsolete.  Kept here to avoid reuse, as the old error can still appear on
+// histograms.
+// NET_ERROR(REQUEST_FOR_SECURE_RESOURCE_OVER_INSECURE_QUIC, -359)
 
 // Transport security is inadequate for the SPDY version.
 NET_ERROR(SPDY_INADEQUATE_TRANSPORT_SECURITY, -360)
 
 // The peer violated SPDY flow control.
 NET_ERROR(SPDY_FLOW_CONTROL_ERROR, -361)
 
 // The peer sent an improperly sized SPDY frame.
 NET_ERROR(SPDY_FRAME_SIZE_ERROR, -362)
 
@@ skipping 175 matching lines @@
 NET_ERROR(DNS_TIMED_OUT, -803)
 
 // The entry was not found in cache, for cache-only lookups.
 NET_ERROR(DNS_CACHE_MISS, -804)
 
 // Suffix search list rules prevent resolution of the given host name.
 NET_ERROR(DNS_SEARCH_EMPTY, -805)
 
 // Failed to sort addresses according to RFC3484.
 NET_ERROR(DNS_SORT_ERROR, -806)