Swarm ash_unittests.

ash/ash.gyp

 # Copyright (c) 2012 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.
 
 {
   'variables': {
     'chromium_code': 1,
     'grit_out_dir': '<(SHARED_INTERMEDIATE_DIR)/chrome',
     # These files lists are shared with the GN build.
     'ash_sources': [
@@ skipping 1256 matching lines @@
       ],
       'conditions': [
         ['chromeos==1', {
           'dependencies': [
             '../ui/display/display.gyp:display',
           ],
         }],
       ],
     },
   ],
+  'conditions': [
+    ['test_isolation_mode != "noop"', {
+      'targets': [
+        {
+          'target_name': 'ash_unittests_run',
+          'type': 'none',
+          'dependencies': [
+            'ash_unittests',
+          ],
+          'includes': [
+            '../build/isolate.gypi',
+            'ash_unittests.isolate',
+          ],
+          'sources': [
+            'ash_unittests.isolate',
+          ],
+        },
+      ],
+    }],
+  ],
 }