recipe_engine: change resource API to use repo root

recipe_engine/recipe_api.py

 # Copyright 2013-2015 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.
 
 from __future__ import absolute_import
 import contextlib
 import keyword
 import re
 import types
 
@@ skipping 428 matching lines @@
   def resource(self, *path):
     """Returns path to a file under <recipe module>/resources/ directory.
 
     Args:
       path: path relative to module's resources/ directory.
     """
     # TODO(vadimsh): Verify that file exists. Including a case like:
     #  module.resource('dir').join('subdir', 'file.py')
     return self._module.MODULE_DIRECTORY.join('resources', *path)
 
-  def package_resource(self, *path):
+  def package_repo_resource(self, *path):
     """Returns a resource path, where path is relative to the root of
-    the package where this module is defined.
+    the package repo where this module is defined.
     """
-    return self._module.PACKAGE_DIRECTORY.join(*path)
+    return self._module.PACKAGE_REPO_ROOT.join(*path)
 
   @property
   def name(self):
     return self._module.NAME
 
 
 class RecipeApi(RecipeApiPlain):
   __metaclass__ = RecipeApiMeta
 
 
@@ skipping 172 matching lines @@
     """
     Gets the BoundProperty version of this Property. Requires a name.
     """
     return BoundProperty(
         self._default, self.help, self.kind, name, property_type, module,
         self.param_name)
 
 class UndefinedPropertyException(TypeError):
   pass