Use switches for CSSPropertyMetadata::isDescriptorOnly.

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 <bitset>
 
 namespace blink {
 {% for flag, function_name in switches %}
@@ skipping 44 matching lines @@
     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);
   }
 }
 
-bool CSSPropertyMetadata::isDescriptorOnly(CSSPropertyID property) {
-    return property >= {{descriptors[0].property_id}} && property <= {{descriptors[-1].property_id}};
-}
-
 } // namespace blink