Swarm ash_unittests.

testing/buildbot/chromium_trybot.json

 {
   "compile_targets": [
     "all"
   ],
   "gtest_tests": [
     "accessibility_unittests",
     "app_list_unittests",
     {
+      "test": "ash_unittests",
+      "chromium_configs": ["chromium_chromeos", "chromium_chromeos_clang"],
+      "swarming": {
+        "can_use_on_swarming_builders": true
+      }
+    },
+    {
+      "test": "ash_unittests",
+      "platforms": ["win"],
+      "swarming": {
+        "can_use_on_swarming_builders": true
+      }
+    },
+    {
       "test": "base_unittests",
       "swarming": {
         "can_use_on_swarming_builders": true
       }
     },
     {
       "test": "browser_tests",
       "swarming": {
         "can_use_on_swarming_builders": true,
         "shards": 5
@@ skipping 133 matching lines @@
     "url_unittests",
     {
       "test": "wm_unittests",
       "platforms": ["linux"]
     },
     {
       "test": "app_shell_browsertests",
       "platforms": ["linux"]
     },
     {
-      "test": "ash_unittests",
-      "chromium_configs": ["chromium_chromeos", "chromium_chromeos_clang"]
-    },
-    {
-      "test": "ash_unittests",
-      "platforms": ["win"]
-    },
-    {
       "test": "aura_unittests",
       "platforms": ["linux", "win"]
     },
     {
       "test": "mojo_view_manager_unittests",
       "platforms": ["linux"]
     },
     {
       "test": "views_unittests",
       "platforms": ["linux", "win"]
@@ skipping 34 matching lines @@
   "non_filter_tests_builders": [
   ],
 
   "filter_compile_builders": [
     "win_chromium_compile_dbg",
     "win_chromium_rel_swarming",
     "win_chromium_x64_rel_swarming",
     "win8_chromium_rel"
   ]
 }