add a Mac Builder using Python2 less bot

This builder uses
https://chromium-swarm.appspot.com/bot?id=mac-1064-g580

Bug: 1324494
Change-Id: Iaac6ead91cf080f42dc0fee0fbf9d695c33ec93f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3670677
Auto-Submit: Takuto Ikuta <tikuta@chromium.org>
Commit-Queue: Ben Pastene <bpastene@chromium.org>
Reviewed-by: Ben Pastene <bpastene@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1007870}
NOKEYCHECK=True
GitOrigin-RevId: be40ebb0df52d17b30f878ca0898318cea301b39
diff --git a/buildbot/chromium.fyi.json b/buildbot/chromium.fyi.json
index 9518b45..bcfbd69 100644
--- a/buildbot/chromium.fyi.json
+++ b/buildbot/chromium.fyi.json
@@ -5754,6 +5754,28 @@
       }
     ]
   },
+  "Mac Builder (py2 less)": {
+    "additional_compile_targets": [
+      "all"
+    ],
+    "scripts": [
+      {
+        "name": "check_static_initializers",
+        "script": "check_static_initializers.py",
+        "swarming": {}
+      },
+      {
+        "name": "metrics_python_tests",
+        "script": "metrics_python_tests.py",
+        "swarming": {}
+      },
+      {
+        "name": "webkit_lint",
+        "script": "blink_lint_expectations.py",
+        "swarming": {}
+      }
+    ]
+  },
   "Mac Builder (reclient compare)": {
     "additional_compile_targets": [
       "all"
diff --git a/buildbot/waterfalls.pyl b/buildbot/waterfalls.pyl
index 42d5b59..6da23c0 100644
--- a/buildbot/waterfalls.pyl
+++ b/buildbot/waterfalls.pyl
@@ -2823,6 +2823,15 @@
           'isolated_scripts': 'vulkan_swiftshader_isolated_scripts',
         },
       },
+      'Mac Builder (py2 less)': {
+        # Copied from 'Mac Builder'.
+        'additional_compile_targets': [
+          'all',
+        ],
+        'test_suites': {
+          'scripts': 'chromium_mac_scripts',
+        }
+      },
       # TODO(crbug.com/1260232): remove this after the migration.
       'Mac Builder (reclient compare)': {
         'additional_compile_targets': [