Do not use HTTP/2 without adequate security.

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 135 matching lines @@
       'ssl/openssl_client_key_store.h',
       'ssl/openssl_platform_key.h',
       'ssl/openssl_platform_key_mac.cc',
       'ssl/openssl_platform_key_win.cc',
       'ssl/openssl_ssl_util.cc',
       'ssl/openssl_ssl_util.h',
       'ssl/signed_certificate_timestamp_and_status.cc',
       'ssl/signed_certificate_timestamp_and_status.h',
       'ssl/ssl_cert_request_info.cc',
       'ssl/ssl_cert_request_info.h',
+      'ssl/ssl_cipher_suite_names.cc',
+      'ssl/ssl_cipher_suite_names.h',
       'ssl/ssl_client_auth_cache.cc',
       'ssl/ssl_client_auth_cache.h',
       'ssl/ssl_client_cert_type.h',
       'ssl/ssl_config.cc',
       'ssl/ssl_config.h',
       'ssl/ssl_config_service.cc',
       'ssl/ssl_config_service.h',
       'ssl/ssl_info.cc',
       'ssl/ssl_info.h',
     ],
@@ skipping 1598 matching lines @@
     ],
     'net_base_mac_ios_sources': [
       'base/mac/url_conversions.h',
       'base/mac/url_conversions.mm',
     ],
     'net_base_test_mac_ios_sources': [
       'base/mac/url_conversions_unittest.mm',
     ],
   }
 }