Switch Mac ANGLE CQ bots to GN.

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 46fde1348d55ab34a30fe7f4281ae8ece5f75afe..8bb232d28578b15eca57ca4b28881d7e0f400894 100644
--- a/tools/mb/mb_config.pyl
+++ b/tools/mb/mb_config.pyl
@@ -700,8 +700,8 @@
         'swarming_gpu_fyi_tests_chromeos_gn_release_trybot',
       'linux_angle_dbg_ng': 'swarming_gpu_fyi_tests_gn_debug_trybot',
       'linux_angle_rel_ng': 'swarming_gpu_fyi_tests_gn_release_trybot',
-      'mac_angle_dbg_ng': 'swarming_gpu_fyi_tests_gyp_debug_trybot',
-      'mac_angle_rel_ng': 'swarming_gpu_fyi_tests_gyp_release_trybot',
+      'mac_angle_dbg_ng': 'swarming_gpu_fyi_tests_gn_debug_trybot',
+      'mac_angle_rel_ng': 'swarming_gpu_fyi_tests_gn_release_trybot',
       'win_angle_dbg_ng': 'swarming_gpu_tests_deqp_gles_gn_debug_trybot_x86',
       'win_angle_rel_ng': 'swarming_gpu_tests_deqp_gles_gn_release_trybot_x86',
       'win_angle_x64_dbg_ng':
@@ -1666,16 +1666,6 @@
       'gn', 'clang', 'debug_bot_minimal_symbols',
     ],
 
-    'swarming_gpu_fyi_tests_gyp_debug_trybot': [
-      'swarming', 'gpu_tests', 'internal_gles2_conform_tests', 'gyp',
-      'debug_trybot',
-    ],
-
-    'swarming_gpu_fyi_tests_gyp_release_trybot': [
-      'swarming', 'gpu_tests', 'internal_gles2_conform_tests', 'gyp',
-      'release_trybot',
-    ],
-
     'swarming_gpu_tests_deqp_gles_gn_debug_trybot_x64': [
       'swarming', 'gpu_tests', 'angle_deqp_tests',
       'internal_gles2_conform_tests', 'gn', 'debug_trybot', 'x64',