Remove an unused file defining WebSocket multiplexing related constants

net/net.gypi

 # Copyright 2014 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 is shared between the regular GYP build, the NaCl GYP build, and
 # the GN build. For GN support, it must have no conditionals or anything like
 # that beyond the simple one-level-deep dictionary of values.
 {
   'variables': {
     # Subset of net source files that are compiled for NaCl (net_nacl target).
@@ skipping 2132 matching lines @@
       "websockets/websocket_handshake_constants.h",
       "websockets/websocket_handshake_request_info.cc",
       "websockets/websocket_handshake_request_info.h",
       "websockets/websocket_handshake_response_info.cc",
       "websockets/websocket_handshake_response_info.h",
       "websockets/websocket_handshake_stream_base.h",
       "websockets/websocket_handshake_stream_create_helper.cc",
       "websockets/websocket_handshake_stream_create_helper.h",
       "websockets/websocket_inflater.cc",
       "websockets/websocket_inflater.h",
-      "websockets/websocket_mux.h",
       "websockets/websocket_stream.cc",
       "websockets/websocket_stream.h",
     ],
     # List of test data files for //net:test_support. Can be regenerated by
     # running net/data/update_net_gypi.py.
     'net_test_support_data_sources': [
       'data/ssl/certificates/1024-rsa-ee-by-1024-rsa-intermediate.pem',
       'data/ssl/certificates/1024-rsa-ee-by-2048-rsa-intermediate.pem',
       'data/ssl/certificates/1024-rsa-ee-by-768-rsa-intermediate.pem',
       'data/ssl/certificates/1024-rsa-ee-by-prime256v1-ecdsa-intermediate.pem',
@@ skipping 1140 matching lines @@
       'third_party/nist-pkits/crls/requireExplicitPolicy5subCACRL.crl',
       'third_party/nist-pkits/crls/requireExplicitPolicy5subsubCACRL.crl',
       'third_party/nist-pkits/crls/requireExplicitPolicy5subsubsubCACRL.crl',
       'third_party/nist-pkits/crls/requireExplicitPolicy7CACRL.crl',
       'third_party/nist-pkits/crls/requireExplicitPolicy7subCARE2CRL.crl',
       'third_party/nist-pkits/crls/requireExplicitPolicy7subsubCARE2RE4CRL.crl',
       'third_party/nist-pkits/crls/requireExplicitPolicy7subsubsubCARE2RE4CRL.crl',
     ],
   }
 }