Simplify animation/transition parsing slightly

Source/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 "config.h"
 #include "StyleBuilderFunctions.h"
@@ skipping 81 matching lines @@
     if (!parentData)
         applyInitial{{property_id}}(state);
     else
         state.style()->access{{animation}}s().{{vector}} = parentData->{{vector}};
 }
 
 {{declare_value_function(property_id)}}
 {
     CSS{{animation}}Data& data = state.style()->access{{animation}}s();
     data.{{vector}}.clear();
-    if (value->isValueList()) {
-        for (CSSValueListIterator i = value; i.hasMore(); i.advance())
-            data.{{vector}}.append(state.styleMap().mapAnimation{{attribute}}(i.value()));
-    } else {
-        data.{{vector}}.append(state.styleMap().mapAnimation{{attribute}}(value));
-    }
+    for (CSSValueListIterator i = value; i.hasMore(); i.advance())
+        data.{{vector}}.append(state.styleMap().mapAnimation{{attribute}}(i.value()));
 }
 {% endmacro %}
 {{apply_animation('CSSPropertyWebkitAnimationDelay', 'Delay', 'Animation')}}
 {{apply_animation('CSSPropertyWebkitAnimationDirection', 'Direction', 'Animation')}}
 {{apply_animation('CSSPropertyWebkitAnimationDuration', 'Duration', 'Animation')}}
 {{apply_animation('CSSPropertyWebkitAnimationFillMode', 'FillMode', 'Animation')}}
 {{apply_animation('CSSPropertyWebkitAnimationIterationCount', 'IterationCount', 'Animation')}}
 {{apply_animation('CSSPropertyWebkitAnimationName', 'Name', 'Animation')}}
 {{apply_animation('CSSPropertyWebkitAnimationPlayState', 'PlayState', 'Animation')}}
 {{apply_animation('CSSPropertyWebkitAnimationTimingFunction', 'TimingFunction', 'Animation')}}
@@ skipping 448 matching lines @@
             color,
             svgPaint->uri(),
             state.applyPropertyToRegularStyle(),
             state.applyPropertyToVisitedLinkStyle());
     }
 }
 {% endmacro %}
 {{apply_svg_paint('CSSPropertyFill', 'FillPaint')}}
 {{apply_svg_paint('CSSPropertyStroke', 'StrokePaint')}}
 } // namespace WebCore