Generate subgroup StyleSurroundData in ComputedStyle.

third_party/WebKit/Source/build/scripts/templates/ComputedStyleBase.h.tmpl

 {% from 'macros.tmpl' import license, print_if %}
+{% from 'fields/field.tmpl' import encode, get_expr, set_expr %}
+{% from 'fields/group.tmpl' import def_group %}
 {{license()}}
 
 #ifndef ComputedStyleBase_h
 #define ComputedStyleBase_h
 
 #include "core/style/ComputedStyleConstants.h"
 #include "core/CoreExport.h"
+#include "core/style/DataRef.h"
 {% for path in include_paths %}
 #include "{{path}}"
 {% endfor %}
 
 {# Each field template has macros that we can call to generate specific
    aspects of the field (e.g. getters, setters).
 #}
 {% import 'fields/keyword.tmpl' as keyword %}
 {% import 'fields/flag.tmpl' as flag %}
 {% import 'fields/monotonic_flag.tmpl' as monotonic_flag %}
 {% import 'fields/storage_only.tmpl' as storage_only %}
 {% import 'fields/external.tmpl' as external %}
 {% from 'fields/field.tmpl' import encode %}
 {% set field_templates = {
      'keyword': keyword,
      'flag': flag,
      'monotonic_flag': monotonic_flag,
      'storage_only': storage_only, 
      'external': external
    } %}
 
 namespace blink {
 
 // The generated portion of ComputedStyle. For more info, see the header comment
 // in ComputedStyle.h.
 class CORE_EXPORT ComputedStyleBase {
  public:
   inline bool independentInheritedEqual(const ComputedStyleBase& o) const {
     return (
-    {% for field in fields if field.is_inherited and field.is_independent %}
-        {{field.name}} == o.{{field.name}}{{print_if(not loop.last, ' &&')}}
+    {% for field in computed_style.all_fields if field.is_inherited and field.is_independent %}
+        {{get_expr(field)}} == o.{{get_expr(field)}}{{print_if(not loop.last, ' &&')}}
     {% endfor %}
     );
   }
 
   inline bool nonIndependentInheritedEqual(const ComputedStyleBase& o) const {
     return (
-    {% for field in fields if field.is_inherited and not field.is_independent %}
-        {{field.name}} == o.{{field.name}}{{print_if(not loop.last, ' &&')}}
+    {% for field in computed_style.all_fields if field.is_inherited and not field.is_independent %}
+        {{get_expr(field)}} == o.{{get_expr(field)}}{{print_if(not loop.last, ' &&')}}
     {% endfor %}
     );
   }
 
   inline bool inheritedEqual(const ComputedStyleBase& o) const {
     return independentInheritedEqual(o) && nonIndependentInheritedEqual(o);
   }
 
   inline bool nonInheritedEqual(const ComputedStyleBase& o) const {
     return (
-    {% for field in fields if field.is_property and not field.is_inherited %}
-        {{field.name}} == o.{{field.name}}{{print_if(not loop.last, ' &&')}}
+    {% for field in computed_style.all_fields if field.is_property and not field.is_inherited %}
+        {{get_expr(field)}} == o.{{get_expr(field)}}{{print_if(not loop.last, ' &&')}}
     {% endfor %}
     );
   }
 
   enum IsAtShadowBoundary {
     AtShadowBoundary,
     NotAtShadowBoundary,
   };
   void inheritFrom(const ComputedStyleBase& inheritParent,
                    IsAtShadowBoundary isAtShadowBoundary = NotAtShadowBoundary);
 
   void copyNonInheritedFromCached(const ComputedStyleBase& other);
 
   // Copies the values of any independent inherited properties from the parent
   // style that are marked as inherited by this style.
   void propagateIndependentInheritedProperties(
       const ComputedStyleBase& parentStyle);
 
   // Fields.
   // TODO(sashab): Remove initialFoo() static methods and update callers to
   // use resetFoo(), which can be more efficient.
 
-  {% for field in fields %}
+  {% for field in computed_style.all_fields %}
   // {{field.property_name}}
   {{field_templates[field.field_template].decl_methods(field)|indent(2)}}
 
   {% endfor %}
+ private:
+  {% for subgroup in computed_style.subgroups %}
+  {{def_group(subgroup)|indent(2)}}
+
+  {% endfor %}
+
  protected:
   // Constructor and destructor are protected so that only the parent class ComputedStyle
   // can instantiate this class.
   ALWAYS_INLINE ComputedStyleBase() :
-  {% for field in fields %}
+  {% for field in computed_style.fields %}
       {{field.name}}({{encode(field, field.default_value)}}){{print_if(not loop.last, ',')}}
   {% endfor %}
-  {}
+  {
+    {% for subgroup in computed_style.subgroups %}
+    {{subgroup.member_name}}.init();
+    {% endfor %}
+  }
 
   ~ComputedStyleBase() = default;
 
   // Storage.
-  {% for field in fields %}
+  {% for subgroup in computed_style.subgroups %}
+  DataRef<{{subgroup.type_name}}> {{subgroup.member_name}};
+  {% endfor %}
+
+  {% for field in computed_style.fields %}
   {% if field.is_bit_field %}
   unsigned {{field.name}} : {{field.size}}; // {{field.type_name}}
   {% else %}
   {{field.type_name}} {{field.name}};
   {% endif %}
   {% endfor %}
 };
 
 } // namespace blink
 
 #endif // ComputedStyleBase_h