Remove ERR_QUIC_BROKEN_ERROR and instead use ERR_QUIC_PROTOCOL_ERROR

net/quic/chromium/quic_http_stream.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/quic/chromium/quic_http_stream.h"
 
 #include <utility>
 
 #include "base/auto_reset.h"
 #include "base/callback_helpers.h"
@@ skipping 873 matching lines @@
     return ERR_CONNECTION_CLOSED;
 
   // Explicit stream error are always fatal.
   if (quic_stream_error_ != QUIC_STREAM_NO_ERROR &&
       quic_stream_error_ != QUIC_STREAM_CONNECTION_ERROR) {
     return ERR_QUIC_PROTOCOL_ERROR;
   }
 
   DCHECK_NE(QUIC_HANDSHAKE_TIMEOUT, quic_connection_error_);
 
-  // If the headers have not been received and QUIC is now broken, return
-  // ERR_QUIC_BROKEN_ERROR to permit HttpNetworkTransaction to retry the request
-  // over TCP.
-  if (!response_headers_received_ &&
-      http_server_properties_->IsAlternativeServiceBroken(AlternativeService(
-          kProtoQUIC, server_id_.host(), server_id_.port()))) {
-    return ERR_QUIC_BROKEN_ERROR;
-  }
-
   return ERR_QUIC_PROTOCOL_ERROR;
 }
 
 }  // namespace net