Enable swarming for some test binaries on Mac GN builds.

ui/base/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/buildflag_header.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 import("//ui/base/ui_features.gni")
@@ skipping 927 matching lines @@
     data += [
       # TODO(brettw): Remove these two lines.
       "$root_out_dir/ui/en-US.pak",
       "$root_gen_dir/ui/resources/ui_resources_100_percent.pak",
     ]
   }
   if (is_mac) {
     data += [ "$root_out_dir/ui_unittests Framework.framework/" ]
 
     if (is_asan && symbol_level == 0) {
-      data += [ "$root_out_dir/ui_base_unittests.dSYM/" ]
+      # TODO(crbug.com/330301): make this conditional on mac_strip_release.
+      # data += [ "$root_out_dir/ui_base_unittests.dSYM/" ]
     }
   }
 }
 
 if (is_mac) {
   mac_framework_bundle("ui_unittests_framework") {
     testonly = true
     deps = [
       "//ui/resources:ui_test_pak_bundle_data",
     ]
     info_plist = "test/framework-Info.plist"
     output_name = "ui_unittests Framework"
   }
 }