Ensure that custom property declarations are treated as inherited

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

 {% from 'macros.tmpl' import license %}
 {{license()}}
 
 #include "core/css/CSSPropertyMetadata.h"
 
 #include "platform/RuntimeEnabledFeatures.h"
 #include "wtf/BitArray.h"
 
 namespace blink {
 {% for flag, function_name in switches %}
 
 bool CSSPropertyMetadata::{{function_name}}(CSSPropertyID property)
 {
     switch(property) {
     case CSSPropertyInvalid:
         ASSERT_NOT_REACHED();
         return false;
     {% for property_id, property in properties.items() if property[flag] %}
     case {{property_id}}:
     {% endfor %}
+    {% if function_name == "isInheritedProperty" %}
+    case CSSPropertyVariable:
+    {% endif %}
         return true;
     default:
         return false;
     }
 }
 {% endfor %}
 
 // There is one more valid property ID than the total count of CSS properties
 // because of custom properties.
 static const int numValidPropertyIDs = numCSSProperties + 1;
@@ skipping 21 matching lines @@
 void CSSPropertyMetadata::filterEnabledCSSPropertiesIntoVector(const CSSPropertyID* properties, size_t propertyCount, Vector<CSSPropertyID>& outVector)
 {
     for (unsigned i = 0; i < propertyCount; i++) {
         CSSPropertyID property = properties[i];
         if (isEnabledProperty(property))
             outVector.append(property);
     }
 }
 
 } // namespace blink