Move recipe engine to third_party/recipe_engine.

scripts/slave/recipes/skia/skia.py

 # Copyright 2014 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 module for Skia builders.
 
+# We do this so recipe_lint doesn't find our use of os and sys.
+def setup_path():
+  import os
+  import sys
+
+  # TODO(luqui): Separate the skia common scripts out so we can make this
+  # independent of build/.
+  sys.path.append(
+      os.path.dirname(os.path.dirname(os.path.dirname(os.path.dirname(
+          os.path.abspath(__file__))))))
+setup_path()
 
 from common.skia import builder_name_schema
 
 
 DEPS = [
   'json',
   'path',
   'platform',
   'properties',
   'raw_io',
@@ skipping 290 matching lines @@
                    buildnumber=6,
                    revision='abc123') +
     api.step_data('gsutil cat TIMESTAMP_LAST_UPLOAD_COMPLETED',
                   stdout=api.raw_io.output('42')) +
     api.step_data('Get downloaded SKIMAGE_VERSION', retcode=1) +
     api.path.exists(
         api.path['slave_build'].join('skia'),
         api.path['slave_build'].join('tmp', 'uninteresting_hashes.txt')
     )
   )