Only include unique files in generated ComputedStyleBase.h

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

 {% from 'macros.tmpl' import license, print_if %}
 {{license()}}
 
 #ifndef ComputedStyleBase_h
 #define ComputedStyleBase_h
 
 #include "core/ComputedStyleBaseConstants.h"
 #include "core/CoreExport.h"
-{% for field in fields if field.field_type_path != None %}
-#include "{{field.field_type_path}}.h"
+{% for path in include_paths %}
+#include "{{path}}"
 {% endfor %}
 
 {# Returns the default value for the field, converted to fit in the storage container. #}
 {% macro default_value(field) -%}
 {# We only support enum fields for now. #}
 static_cast<unsigned>({{field.default_value}})
 {%- endmacro %}
 
 namespace blink {
 
@@ skipping 105 matching lines @@
  protected:
   // Storage.
   {% for field in fields %}
   unsigned {{field.name}} : {{field.size}}; // {{field.type_name}}
   {% endfor %}
 };
 
 } // namespace blink
 
 #endif // ComputedStyleBase_h