Add swarm_presubmit recipe

infra/bots/recipes/swarm_presubmit.py

+# Copyright 2016 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.
+
+
+# Recipe which runs the Skia presubmit.
+
+
+DEPS = [
+  'core',
+  'recipe_engine/properties',
+  'recipe_engine/step',
+  'vars',
+]
+
+
+def RunSteps(api):
+  api.vars.setup()
+  api.core.checkout_steps()
+  api.step('presubmit',
+           cmd=['git', 'cl', 'presubmit', '--force'],
+           cwd=api.vars.skia_dir)
+
+
+def GenTests(api):
+  yield (
+      api.test('presubmit') +
+      api.properties(buildername='Housekeeper-PerCommit-Presubmit',
+                     mastername='client.skia.fyi',
+                     slavename='dummy-slave',
+                     buildnumber=5,
+                     revision='abc123',
+                     path_config='kitchen',
+                     swarm_out_dir='[SWARM_OUT_DIR]')
+  )