Move recipe engine to third_party/recipe_engine.

scripts/slave/recipe_modules/gclient/test_api.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.
 
 import hashlib
 
-from slave import recipe_test_api
+from recipe_engine import recipe_test_api
 
 class GclientTestApi(recipe_test_api.RecipeTestApi):
   def output_json(self, projects, git_mode=False):
     """Deterministically synthesize json.output test data for gclient's
     --output-json option.
 
     Args:
       projects - a list of project paths (e.g. ['src', 'src/dependency'])
       git_mode - Return git hashes instead of svn revs.
     """
@@ skipping 10 matching lines @@
 
   @staticmethod
   def gen_revision(project, GIT_MODE):
     """Hash project to bogus deterministic revision values."""
     h = hashlib.sha1(project)
     if GIT_MODE:
       return h.hexdigest()
     else:
       import struct
       return struct.unpack('!I', h.digest()[:4])[0] % 300000