Refactor code generation to allow us to diff generic expressions and not just fields

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

 {% from 'macros.tmpl' import license %}
 {% from 'fields/field.tmpl' import getter_expression, setter_expression, fieldwise_copy, fieldwise_diff %}
 {{license()}}
 
 #include "core/ComputedStyleBase.h"
 #include "platform/wtf/SizeAssertions.h"
 
 namespace blink {
 
 struct SameSizeAsComputedStyleBase {
@@ skipping 30 matching lines @@
 }
 
 void ComputedStyleBase::PropagateIndependentInheritedProperties(
     const ComputedStyleBase& parentStyle) {
   {% for field in computed_style.all_fields if field.is_property and field.is_independent %}
   if ({{field.is_inherited_method_name}}())
     {{setter_expression(field)}} = parentStyle.{{getter_expression(field)}};
   {% endfor %}
 }
 
-bool ComputedStyleBase::ScrollAnchorDisablingPropertyChanged(
-    const ComputedStyleBase& other,
-    const StyleDifference& diff) const {
-  {{fieldwise_diff(computed_style, computed_style.all_fields
-      |selectattr("property_name", "in", ["margin-top", "margin-left", "margin-right", "margin-bottom", "left", "right", "top", "bottom", "padding-top", "padding-left", "padding-right", "padding-bottom"])
-      |list
-    )|indent(2)}}
+{% for name, groups_to_diff in diff_functions_map.items() %}
+bool ComputedStyleBase::{{name}}(
+    const ComputedStyleBase& other) const {
+  {{fieldwise_diff(groups_to_diff)|indent(2)}}
   return false;
 }
-
-bool ComputedStyleBase::DiffNeedsFullLayoutAndPaintInvalidation(
-    const ComputedStyleBase& other) const {
-  {{fieldwise_diff(computed_style, computed_style.all_fields
-      |selectattr("property_name", "in", ["padding-top", "padding-left", "padding-right", "padding-bottom"])
-      |list
-    )|indent(2)}}
-  return false;
-}
+{% endfor %}
 
 } // namespace blink