Revert "CSS Custom Properties (Variables)"

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

 {% from 'macros.tmpl' import license %}
 {{license()}}
 
 #include "config.h"
 #include "core/css/resolver/StyleBuilder.h"
 
 #include "StyleBuilderFunctions.h"
 #include "core/css/CSSProperty.h"
 #include "core/css/resolver/StyleResolverState.h"
 
@@ skipping 11 matching lines @@
     case {{property_id}}:
         if (isInitial)
             StyleBuilderFunctions::applyInitial{{used_property_id}}(state);
         else if (isInherit)
             StyleBuilderFunctions::applyInherit{{used_property_id}}(state);
         else
             StyleBuilderFunctions::applyValue{{used_property_id}}(state, value);
         return;
 
     {% endfor %}
-    case CSSPropertyVariable:
-        ASSERT(!isInitial && !isInherit);
-        StyleBuilderFunctions::applyValueCSSPropertyVariable(state, value);
-        return;
     {% for property_id, property in properties.items() if property.direction_aware %}
     case {{property_id}}:
     {% endfor %}
     {
         CSSPropertyID resolvedProperty = CSSProperty::resolveDirectionAwareProperty(property, state.style()->direction(), state.style()->writingMode());
         ASSERT(resolvedProperty != property);
         applyProperty(resolvedProperty, state, value);
         return;
     }
     {% for property_id, property in properties.items() if property.builder_skip %}
     case {{property_id}}:
     {% endfor %}
         return;
     default:
         ASSERT_NOT_REACHED();
     }
 }
 
 } // namespace blink