Move recipe engine to third_party/recipe_engine.

scripts/slave/recipe_modules/perf_dashboard/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 urllib
 
-from slave import recipe_api
+from recipe_engine import recipe_api
 
 class PerfDashboardApi(recipe_api.RecipeApi):
   """Provides steps to take a list of perf points and post them to the
   Chromium Perf Dashboard.  Can also use the test url for testing purposes."""
 
   def get_skeleton_point(self, test, revision, value):
     # TODO: masterid is really mastername
     assert(test != '')
     assert(revision != '')
     assert(value != '')
@@ skipping 43 matching lines @@
 
   def post(self, data):
     """Takes a data object which can be jsonified and posts it to url."""
     self.m.python(
       name="perf dashboard post",
       script=self.resource('post_json.py'),
       stdin=self.m.json.input({
         'url' : "%s/add_point" % self.c.url,
         'data' : data
       }))