chromium_tests: add an option to disable deapplying patch on some trybots

scripts/slave/recipes/chromium_trybot.py

 # Copyright 2013 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.
 
 DEPS = [
   'depot_tools/bot_update',
   'chromium',
   'chromium_android',
   'chromium_checkout',
   'chromium_swarming',
@@ skipping 718 matching lines @@
     props(mastername='tryserver.v8',
           buildername='v8_linux_blink_rel',
           patch_project='v8') +
     api.platform.name('linux') +
     suppress_analyze(more_exclusions=['v8/f.*']) +
     api.override_step_data('webkit_tests (with patch)',
         api.test_utils.canned_test_output(passing=False)) +
     api.override_step_data('webkit_tests (without patch)',
         api.test_utils.canned_test_output(passing=True, minimal=True))
   )
+
+  yield (
+    api.test('dont_deapply_patch') +
+    props(mastername='tryserver.chromium.mac',
+          buildername='mac_optional_gpu_tests_rel') +
+    api.platform.name('mac') +
+    api.override_step_data(
+        'read test spec (chromium.gpu.fyi.json)',
+        api.json.output({
+            'Optional Mac Retina Release': {
+                'gtest_tests': ['base_unittests'],
+            },
+        })
+    ) +
+    suppress_analyze()
+  )