Revert "CSS Custom Properties (Variables)"

third_party/WebKit/Source/core/css/resolver/CSSPropertyPriority.h

Index: third_party/WebKit/Source/core/css/resolver/CSSPropertyPriority.h
diff --git a/third_party/WebKit/Source/core/css/resolver/CSSPropertyPriority.h b/third_party/WebKit/Source/core/css/resolver/CSSPropertyPriority.h
index 1b2ec8e0f6ed6ce67025dfe1fc6fcb2cf9c4250e..58a6fbb7c21dc172ad3c0dcd98a88b7f8c32e451 100644
--- a/third_party/WebKit/Source/core/css/resolver/CSSPropertyPriority.h
+++ b/third_party/WebKit/Source/core/css/resolver/CSSPropertyPriority.h
@@ -15,7 +15,6 @@ namespace blink {
 // decides the pixel value of low priority properties with 'em' units.
 
 enum CSSPropertyPriority {
-    ResolveVariables,
     HighPropertyPriority,
     LowPropertyPriority
 };
@@ -33,19 +32,6 @@ public:
 };
 
 template<>
-inline CSSPropertyID CSSPropertyPriorityData<ResolveVariables>::first()
-{
-    static_assert(CSSPropertyVariable == firstCSSProperty - 1, "CSSPropertyVariable should be directly before the first CSS property.");
-    return CSSPropertyVariable;
-}
-
-template<>
-inline CSSPropertyID CSSPropertyPriorityData<ResolveVariables>::last()
-{
-    return CSSPropertyVariable;
-}
-
-template<>
 inline CSSPropertyID CSSPropertyPriorityData<HighPropertyPriority>::first()
 {
     static_assert(CSSPropertyColor == firstCSSProperty, "CSSPropertyColor should be the first high priority property");