Make the Mojo ChromiumOS fyi bot release+dcheck.

tools/mb/mb_config.pyl

Index: tools/mb/mb_config.pyl
diff --git a/tools/mb/mb_config.pyl b/tools/mb/mb_config.pyl
index 6e05b6e776f50be2d15993f2878d75093de489f5..38a10e111929a623fb28de0cacef81382280b7a5 100644
--- a/tools/mb/mb_config.pyl
+++ b/tools/mb/mb_config.pyl
@@ -248,8 +248,7 @@
       'Linux remote_run Tester': 'swarming_gn_release_bot',
       'Linux V8 API Stability': 'gn_release_bot',
       'Mac deterministic': 'gn_release_bot_mac_strip',
-      # TODO(mojo): Make 'Mojo ChromiumOS' release+dcheck; see crbug.com/594674
-      'Mojo ChromiumOS': 'swarming_chromeos_gn_ozone_debug_bot',
+      'Mojo ChromiumOS': 'swarming_chromeos_gn_ozone_release_trybot',
       'Mojo Windows': 'gn_release_bot_minimal_symbols_x86',
       'Site Isolation Linux': 'gn_release_trybot',
       'Site Isolation Win': 'gn_release_trybot_x86',
@@ -1638,10 +1637,6 @@
       'swarming', 'chromeos_with_codecs', 'gn', 'debug_bot',
     ],
 
-    'swarming_chromeos_gn_ozone_debug_bot': [
-      'swarming', 'chromeos_with_codecs', 'gn', 'ozone', 'debug_bot',
-    ],
-
     'swarming_chromeos_gn_debug_trybot': [
       'swarming', 'chromeos_with_codecs', 'gn', 'debug_trybot',
     ],