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

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

Index: third_party/WebKit/Source/build/scripts/make_computed_style_base.py
diff --git a/third_party/WebKit/Source/build/scripts/make_computed_style_base.py b/third_party/WebKit/Source/build/scripts/make_computed_style_base.py
index 93b49a89c21cb2eac7bccbd447655fecd5154742..5983b18b7ea38f725ca1faa0f7b4c060ca8e6882 100755
--- a/third_party/WebKit/Source/build/scripts/make_computed_style_base.py
+++ b/third_party/WebKit/Source/build/scripts/make_computed_style_base.py
@@ -193,8 +193,12 @@ def _create_field(field_role, property_):
         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
@@ -222,7 +226,7 @@ def _create_inherited_flag_field(property_):
         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',
     )