Deploy Mac ASAN bot on chromium.gpu.fyi waterfall.

scripts/slave/recipe_modules/chromium_tests/chromium_gpu_fyi.py

Index: scripts/slave/recipe_modules/chromium_tests/chromium_gpu_fyi.py
diff --git a/scripts/slave/recipe_modules/chromium_tests/chromium_gpu_fyi.py b/scripts/slave/recipe_modules/chromium_tests/chromium_gpu_fyi.py
index fd526d24e6485458abe132ff549070521fc7eda7..5fe0b748842c4c93018c5404fa7624605e9ffe5c 100644
--- a/scripts/slave/recipe_modules/chromium_tests/chromium_gpu_fyi.py
+++ b/scripts/slave/recipe_modules/chromium_tests/chromium_gpu_fyi.py
@@ -843,6 +843,26 @@ SPEC = {
       # in order to keep up with the faster cycle time of the tests.
       'enable_swarming': False,
     },
+    'Mac GPU ASAN Release': {
+      'chromium_config': 'chromium',
+      'chromium_apply_config': ['ninja_confirm_noop'],
+      'gclient_config': 'chromium',
+      'chromium_config_kwargs': {
+        'BUILD_CONFIG': 'Release',
+        'TARGET_BITS': 64,
+      },
+      'test_generators': [
+        steps.generate_gtest,
+        steps.generate_script,
+        steps.generate_isolated_script,
+      ],
+      'bot_type': 'builder_tester',
+      'testing': {
+        'platform': 'mac',
+      },
+      'enable_swarming': True,
+      'serialize_tests': True,
+    },
     'Android Release (Nexus 5)': {
       'chromium_config': 'android',
       'chromium_apply_config': ['chrome_with_codecs', 'mb'],