Minor cleanup of some recipe framework code.

scripts/slave/recipe_modules/step/api.py

Index: scripts/slave/recipe_modules/step/api.py
diff --git a/scripts/slave/recipe_modules/step/api.py b/scripts/slave/recipe_modules/step/api.py
index 719f7a39ed08f0e3c6c34619dfb75ee267b42c07..60a18236881032a708933a185dada96a8ac5b68b 100644
--- a/scripts/slave/recipe_modules/step/api.py
+++ b/scripts/slave/recipe_modules/step/api.py
@@ -6,11 +6,11 @@ from slave import recipe_api
 from slave import recipe_util
 
 class StepApi(recipe_api.RecipeApi):
-  def __init__(self, *args, **kwargs):
+  def __init__(self, **kwargs):
+    super(StepApi, self).__init__(**kwargs)
     self._auto_resolve_conflicts = False
     self._name_function = None
     self._step_names = {}
-    super(StepApi, self).__init__(*args, **kwargs)
 
   # Making these properties makes them show up in show_me_the_modules,
   # and also makes it clear that they are intended to be mutated.