Generate StyleRareInheritedData in ComputedStyleBase.

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

Index: third_party/WebKit/Source/build/scripts/templates/fields/field.tmpl
diff --git a/third_party/WebKit/Source/build/scripts/templates/fields/field.tmpl b/third_party/WebKit/Source/build/scripts/templates/fields/field.tmpl
index f09fc2b5068ceb312eab707f67a312ea849c6d08..e253b78c26e9ece39b31f5da6c1f96443638af44 100644
--- a/third_party/WebKit/Source/build/scripts/templates/fields/field.tmpl
+++ b/third_party/WebKit/Source/build/scripts/templates/fields/field.tmpl
@@ -63,6 +63,14 @@ unsigned {{field.name}} : {{field.size}}; // {{field.type_name}}
 {%- endif %}
 {% endmacro %}
 
+{% macro compare(is_pointer_type, expr, other_name) %}

[nainar, 2017/05/21 23:59:35]

The comparisons in the generated diff attached seem to be over indented.
Probably has to do with this. 

[shend, 2017/05/22 00:19:19]

Done.

+{% 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. #}
@@ -78,8 +86,8 @@ unsigned {{field.name}} : {{field.size}}; // {{field.type_name}}
     {{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)}} &&
+{% for field in group.fields|select("in", fields_to_compare) %}
+  {{compare(field.pointer_type_name, getter_expression(field), "o")}} &&
 {% endfor %}
 {% endmacro %}
 
@@ -123,4 +131,4 @@ if ({{group.group_name}}.Get() != other.{{group.group_name}}.Get()) {
 if (self.{{expression}} != other.{{expression}})
   return true;
 {% endfor %}
-{% endmacro %}
+{% endmacro %}