Revert of Cross-repo recipe package system.

scripts/slave/recipe_modules/properties/api.py

+# Copyright 2013 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 infra.libs.infra_types import freeze, thaw
+from recipe_engine import recipe_api
+import collections
+
+# Use RecipeApiPlain because collections.Mapping has its own metaclass.
+# Additionally, nothing in this class is a composite_step (nothing in this class
+# is any sort of step :).
+class PropertiesApi(recipe_api.RecipeApiPlain, collections.Mapping):
+  """
+  Provide an immutable mapping view into the 'properties' for the current run.
+
+  The value of this api is equivalent to this transformation of the legacy
+  build values:
+    val = factory_properties
+    val.update(build_properties)
+  """
+  def __init__(self, **kwargs):
+    super(PropertiesApi, self).__init__(**kwargs)
+    self._properties = freeze(self._engine.properties)
+
+  def __getitem__(self, key):
+    return self._properties[key]
+
+  def __len__(self):
+    return len(self._properties)
+
+  def __iter__(self):
+    return iter(self._properties)
+
+  def legacy(self):
+    """Returns a reduced set of properties, possibly used by legacy scripts."""
+
+    # Add all properties to this blacklist that are required for testing, but
+    # not used by any lecacy scripts, in order to avoid vast expecation
+    # changes.
+    blacklist = set([
+      'buildbotURL',
+    ])
+    return {k: v for k, v in self.iteritems() if k not in blacklist}
+
+  def thaw(self):
+    """Returns a vanilla python jsonish dictionary of properties."""
+
+    return thaw(self._engine.properties)