Generate StyleRareInheritedData in ComputedStyleBase.

third_party/WebKit/Source/build/scripts/templates/fields/field.tmpl

 {% macro encode(field, value) %}
 {% if field.is_bit_field -%}
 static_cast<unsigned>({{value}})
 {%- else -%}
 {{value}}
 {%- endif %}
 {% endmacro %}
 
 {% macro decode(field, value) %}
 {% if field.is_bit_field -%}
@@ skipping 45 matching lines @@
 {% endmacro %}
 
 {% macro declare_storage(field) %}
 {% if field.is_bit_field %}
 unsigned {{field.name}} : {{field.size}}; // {{field.type_name}}
 {%- else %}
 {{field.type_name}} {{field.name}};
 {%- endif %}
 {% endmacro %}
 
+{% macro compare(is_pointer_type, expr, other_name) %}
+{% if is_pointer_type -%}
+  DataEquivalent({{expr}}, {{other_name}}.{{expr}})
+{%- else -%}
+  {{expr}} == {{other_name}}.{{expr}}
+{%- endif %}
+{% endmacro %}
+
 {# Given a group and a list of fields to compare, this generates a set of
    equality comparisons on those fields. The generated comparisons take
    advantage of group sharing. #}
 {% macro fieldwise_compare(group, fields_to_compare) %}
 {% for subgroup in group.subgroups %}
   {# If every field in this subgroup is to be compared, we can compare the
      group pointer instead. #}
   {% if subgroup.all_fields|reject("in", fields_to_compare)|list|length == 0 -%}
     {{subgroup.member_name}} == o.{{subgroup.member_name}} &&
   {# Otherwise, we would have to recursively generate comparison operations
      on fields in the subgroup. #}
   {% elif subgroup.fields|select("in", fields_to_compare)|list|length > 0 -%}
     {{fieldwise_compare(subgroup, fields_to_compare)}}
   {% endif %}
 {% endfor %}
 {% for field in group.fields|select("in", fields_to_compare) -%}
-  {{getter_expression(field)}} == o.{{getter_expression(field)}} &&
+  {{compare(field.wrapper_pointer_name, getter_expression(field), "o")}} &&
 {% endfor %}
 {% endmacro %}
 
 {% macro fieldwise_copy(group, fields_to_copy) %}
 {% for subgroup in group.subgroups %}
   {% if subgroup.all_fields|reject("in", fields_to_copy)|list|length == 0 -%}
     {{subgroup.member_name}} = other.{{subgroup.member_name}};
   {% elif subgroup.fields|select("in", fields_to_copy)|list|length > 0 -%}
     {{fieldwise_copy(subgroup, fields_to_copy)}}
   {% endif %}
@@ skipping 24 matching lines @@
 {% for group in group_to_diff.subgroups %}
 if ({{group.group_name}}.Get() != other.{{group.group_name}}.Get()) {
 {{fieldwise_diff(group)|indent(2, true)}}
 }
 {% endfor %}
 {% for expression in group_to_diff.expressions %}
 if (self.{{expression}} != other.{{expression}})
   return true;
 {% endfor %}
 {% endmacro %}