Cascade declared property values instead of applying values on top of each other

Source/build/scripts/make_style_builder.py

Index: Source/build/scripts/make_style_builder.py
diff --git a/Source/build/scripts/make_style_builder.py b/Source/build/scripts/make_style_builder.py
index 6c39b332e19b3a8f2af8566ad292eb99d82de35a..d7cc12df0cbbc8a61cd3abc50d6bd492dcfe6fca 100755
--- a/Source/build/scripts/make_style_builder.py
+++ b/Source/build/scripts/make_style_builder.py
@@ -49,16 +49,13 @@ class StyleBuilderWriter(in_generator.Writer):
         'custom_initial': [True, False],
         'custom_inherit': [True, False],
         'custom_value': [True, False],
-        'direction_aware': [True, False],
         'skip': [True, False],
     }
     defaults = {
         'name_for_methods': None,
-        'use_handlers_for': None,
         'svg': False,
         'font': False,
         'converter': None,
-        'direction_aware': False,
         'skip': False,
 # These depend on property name by default
         'type_name': None,
@@ -99,7 +96,7 @@ class StyleBuilderWriter(in_generator.Writer):
                 property['custom_initial'] = True
                 property['custom_inherit'] = True
                 property['custom_value'] = True
-            property['should_declare_functions'] = not property['use_handlers_for'] and not property['direction_aware'] and not property['skip']
+            property['should_declare_functions'] = not property['skip']
 
         self._properties = dict((property['property_id'], property) for property in self._properties)