Specify use_ozone=false for X11 CrOS trybots.

tools/mb/mb_config.pyl

 # Copyright 2015 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 is a .pyl, or "Python Literal", file. You can treat it just like a
 # .json file, with the following exceptions:
 # * all keys must be quoted (use single quotes, please);
 # * comments are allowed, using '#' syntax; and
 # * trailing commas are allowed.
 
@@ skipping 933 matching lines @@
 
     'asan_fuzzer_v8_heap_chrome_with_codecs_release_bot_x86': [
       'clang', 'asan', 'fuzzer', 'v8_heap', 'chrome_with_codecs', 'release_bot', 'x86',
     ],
 
     'asan_fuzzer_v8_heap_release_bot_x86': [
       'clang', 'asan', 'fuzzer', 'v8_heap', 'release_bot', 'x86',
     ],
 
     'asan_lsan_chromeos_release_trybot': [
-      'asan', 'lsan', 'chromeos', 'release_trybot',
+      'asan', 'lsan', 'chromeos', 'x11_cros', 'release_trybot',
     ],
 
     'asan_lsan_edge_debug_bot': [
       'asan', 'lsan', 'edge', 'debug_bot',
     ],
 
     'asan_lsan_edge_fuzzer_v8_heap_chromeos_codecs_release_bot': [
       'asan', 'lsan', 'edge', 'v8_heap', 'chromeos_codecs', 'release_bot',
     ],
 
@@ skipping 51 matching lines @@
 
     'chrome_with_codecs_blink_logging_release_trybot': [
       'chrome_with_codecs', 'blink_logging', 'release_trybot',
     ],
 
     'chrome_with_codecs_blink_logging_release_trybot_x86': [
       'chrome_with_codecs', 'blink_logging', 'release_trybot', 'x86',
     ],
 
     'chromeos_asan_lsan_edge_fuzzer_v8_heap_release_bot': [
-      'chromeos', 'asan', 'lsan', 'edge', 'fuzzer', 'v8_heap', 'release_bot',
+      'chromeos', 'x11_cros', 'asan', 'lsan', 'edge', 'fuzzer', 'v8_heap', 'release_bot',
     ],
 
     'chromeos_msan_release_bot': [
-      'chromeos', 'msan', 'release_bot',
+      'chromeos', 'x11_cros', 'msan', 'release_bot',
     ],
 
     'chromeos_with_codecs_debug_bot': [
-      'chromeos_with_codecs', 'debug_bot',
+      'chromeos_with_codecs', 'x11_cros', 'debug_bot',
     ],
 
     'chromeos_with_codecs_debug_trybot': [
-      'chromeos_with_codecs', 'debug_trybot',
+      'chromeos_with_codecs', 'x11_cros', 'debug_trybot',
     ],
 
     'chromeos_with_codecs_ozone_release_bot': [
       'chromeos_with_codecs', 'ozone', 'release_bot',
     ],
 
     'chromeos_with_codecs_ozone_release_trybot': [
       'chromeos_with_codecs', 'ozone', 'release_trybot',
     ],
 
     'chromeos_with_codecs_release_bot': [
-      'chromeos_with_codecs', 'release_bot',
+      'chromeos_with_codecs', 'x11_cros', 'release_bot',
     ],
 
     'chromeos_with_codecs_release_trybot': [
-      'chromeos_with_codecs', 'release_trybot',
+      'chromeos_with_codecs', 'x11_cros', 'release_trybot',
     ],
 
     'clang_debug_trybot_x86': [
       'clang', 'debug_trybot', 'x86',
     ],
 
     'clang_debug_bot_minimal_symbols_x86': [
       'clang', 'debug_bot', 'minimal_symbols', 'x86',
     ],
 
@@ skipping 133 matching lines @@
 
     'debug_trybot_x86': [
       'debug_trybot', 'x86',
     ],
 
     'gpu_fyi_tests_chromeos_ozone_release_trybot': [
       'gpu_fyi_tests', 'release_trybot', 'ozone', 'ozone_linux', 'system_gbm_libdrm',
     ],
 
     'gpu_fyi_tests_chromeos_release_trybot': [
-      'gpu_fyi_tests', 'release_trybot', 'chromeos',
+      'gpu_fyi_tests', 'release_trybot', 'chromeos', 'x11_cros',
     ],
 
     'gpu_fyi_tests_debug_trybot': [
       'gpu_fyi_tests', 'debug_trybot',
     ],
 
     'gpu_fyi_tests_release_trybot': [
       'gpu_fyi_tests', 'release_trybot',
     ],
 
@@ skipping 122 matching lines @@
 
     'official_clang_x86': [
       'clang', 'official', 'x86',
     ],
 
     'official_goma': [
       'official', 'goma',
     ],
 
     'official_goma_chromeos': [
-      'official', 'goma', 'chromeos',
+      'official', 'goma', 'chromeos', 'x11_cros',
     ],
 
     'official_goma_thin_lto_use_lld': [
       'official', 'goma', 'thin_lto', 'use_lld',
     ],
 
     'official_goma_minimal_symbols_android': [
       'official', 'goma', 'minimal_symbols', 'android',
     ],
 
@@ skipping 437 matching lines @@
     },
 
     'no_pch': {
       'gn_args': 'enable_precompiled_headers=false',
     },
 
     'no_symbols': {
       'gn_args': 'symbol_level=0',
     },
 
+    'x11_cros': {
+      # When use_ozone=false then use_x11=true.
+      'gn_args': 'use_ozone=false',
+    },
+
     'official': {
       'mixins': ['official_optimize'],
       'gn_args': 'is_chrome_branded=true',
     },
 
     'official_optimize': {
       'gn_args': 'is_official_build=true is_debug=false',
     },
 
     'optimize_for_fuzzing': {
@@ skipping 107 matching lines @@
 
     'x64': {
       'gn_args': 'target_cpu="x64"',
     },
 
     'x86': {
       'gn_args': 'target_cpu="x86"',
     },
   },
 }