Generalise 'flag' template to 'primitive' when generating ComputedStyle.

third_party/WebKit/Source/build/scripts/make_computed_style_base.py

 #!/usr/bin/env python
 # Copyright 2016 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 math
 import sys
 
 import json5_generator
 import template_expander
@@ skipping 175 matching lines @@
         size = int(math.ceil(math.log(len(property_['keywords']), 2)))
     elif property_['field_template'] == 'storage_only':
         # 'storage_only' fields need to specify a size, type_name and default_value
         type_name = property_['type_name']
         default_value = property_['default_value']
         size = property_['size']
     elif property_['field_template'] == 'external':
         type_name = property_['type_name']
         default_value = property_['default_value']
         size = None
+    elif property_['field_template'] == 'primitive':
+        type_name = property_['type_name']
+        default_value = property_['default_value']
+        size = 1 if type_name == 'bool' else None  # pack bools with 1 bit.
     else:
-        assert property_['field_template'] in ('flag', 'monotonic_flag')
+        assert property_['field_template'] in ('monotonic_flag',)
         type_name = 'bool'
         default_value = 'false'
         size = 1
 
     return Field(
         field_role,
         name_for_methods,
         property_name=property_['name'],
         inherited=property_['inherited'],
         independent=property_['independent'],
         type_name=type_name,
         field_template=property_['field_template'],
         size=size,
         default_value=default_value,
     )
 
 
 def _create_inherited_flag_field(property_):
     """
     Create the field used for an inheritance fast path from an independent CSS property,
     and return the Field object.
     """
     return Field(
         'inherited_flag',
         join_name(property_['name_for_methods'], 'is inherited'),
         property_name=property_['name'],
         type_name='bool',
-        field_template='flag',
+        field_template='primitive',
         size=1,
         default_value='true',
     )
 
 
 def _create_fields(field_role, properties):
     """
     Create ComputedStyle fields from properties or nonproperties and return a list of Field objects.
     """
     fields = []
@@ skipping 149 matching lines @@
                     'mapping': [(enum_value_name(k), enum_for_css_keyword(k)) for k in property_['keywords']],
                 }
 
         return {
             'include_paths': self._include_paths,
             'mappings': mappings,
         }
 
 if __name__ == '__main__':
     json5_generator.Maker(ComputedStyleBaseWriter).main()