buildbot: Run the webkit layout tests under swarming on RandomOrder bots.

testing/buildbot/gn_isolate_map.pyl

 ## Copyright 2015 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.
 
 # This is a .pyl, or "Python Literal", file. You can treat it just like a
 # .json file, with the following exceptions:
 # * all keys must be quoted (use single quotes, please);
 # * comments are allowed, using '#' syntax; and
 # * trailing commas are allowed.
 
@@ skipping 989 matching lines @@
     "label": "//chrome/android/webapk/libs/client:webapk_client_junit_tests",
     "type": "junit_test",
   },
   "webapk_shell_apk_junit_tests": {
     "label": "//chrome/android/webapk/shell_apk:webapk_shell_apk_junit_tests",
     "type": "junit_test",
   },
   "webkit_layout_tests": {
     "label": "//:webkit_layout_tests",
     "type": "script",
-    "script": "//testing/scripts/run_telemetry_as_googletest.py",
+    "script": "//testing/scripts/run_isolated_script_test.py",
     "args": [
       "--xvfb",
       "../../third_party/WebKit/Tools/Scripts/run-webkit-tests",
+      "--clobber-old-results",
+      "--debug-rwt-logging",
+      "--no-show-results",
+      "--results-directory", "${ISOLATED_OUTDIR}/layout-test-results",
+    ],
+  },
+  "webkit_layout_tests_exparchive": {
+    "label": "//:webkit_layout_tests_exparchive",
+    "type": "script",
+    "script": "//testing/scripts/run_isolated_script_test.py",
+    "args": [
+      "--xvfb",
+      "../../third_party/WebKit/Tools/Scripts/run-webkit-tests",
       "--clobber-old-results",
       "--no-show-results",
       "--results-directory", "${ISOLATED_OUTDIR}/layout-test-results",
     ],
   },
   "webkit_unit_tests": {
     "label": "//third_party/WebKit/Source/web:webkit_unit_tests",
     "type": "console_test_launcher",
   },
   "wm_unittests": {
     "label": "//ui/wm:wm_unittests",
     "type": "windowed_test_launcher",
   },
   "wtf_unittests": {
     "label": "//third_party/WebKit/Source/wtf:wtf_unittests",
     "type": "console_test_launcher",
   },
 }