Creating webkit_layout_tests target.

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.
 
 # gn_isolate_map.pyl - A mapping of Ninja build target names to GN labels and
 # test type classifications for the tests that are run on the bots.
 #
 # This mapping is used by MB so that we can uniformly refer to test binaries
 # by their Ninja target names in the recipes and not need to worry about how
 # they are referred to in GN or GYP specifically (the GYP target name is pretty
@@ skipping 923 matching lines @@
     "type": "console_test_launcher",
   },
   "webapk_client_junit_tests": {
     "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",
+    "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",
   },
   "webrtc_nonparallel_tests": {
     "label": "//webrtc:webrtc_nonparallel_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",
   },
   "xmllite_xmpp_unittests": {
     "label": "//webrtc:xmllite_xmpp_unittests",
     "type": "console_test_launcher",
   }
 }