Remove CSS clients of ImageResource

sky/engine/build/scripts/templates/StyleBuilderFunctions.cpp.tmpl

 {% from 'macros.tmpl' import license %}
 {#
     This file is for property handlers which use the templating engine to
     reduce (handwritten) code duplication.
 
     The `properties' dict can be used to access a property's parameters in
     jinja2 templates (i.e. setter, getter, initial, type_name)
 #}
 #include "StyleBuilderFunctions.h"
 
@@ skipping 352 matching lines @@
         /* Reset any remaining layers to not have the property set. */
         currChild->clear{{fill_type}}();
         currChild = currChild->next();
     }
 }
 
 {{declare_value_function(property_id)}}
 {
     FillLayer* currChild = &state.style()->{{access_layers}}();
     FillLayer* prevChild = 0;
-    if (value->isValueList() && !value->isImageSetValue()) {
+    if (value->isValueList()) {
         /* Walk each value and put it into a layer, creating new layers as needed. */
         CSSValueList* valueList = toCSSValueList(value);
         for (unsigned int i = 0; i < valueList->length(); i++) {
             if (!currChild)
                 currChild = prevChild->ensureNext();
             state.styleMap().{{map_fill}}(currChild, valueList->item(i));
             prevChild = currChild;
             currChild = currChild->next();
         }
     } else {
@@ skipping 55 matching lines @@
         state.style()->set{{alignment_type}}OverflowAlignment(*pairValue->second());
     } else {
         state.style()->set{{alignment_type}}(*primitiveValue);
     }
 }
 {% endmacro %}
 {{apply_alignment('CSSPropertyAlignItems', 'AlignItems')}}
 {{apply_alignment('CSSPropertyAlignSelf', 'AlignSelf')}}
 
 } // namespace blink