CSS Custom Properties (Variables)

Source/core/css/parser/CSSParserImpl.h

Index: Source/core/css/parser/CSSParserImpl.h
diff --git a/Source/core/css/parser/CSSParserImpl.h b/Source/core/css/parser/CSSParserImpl.h
index 94e8e8229df803fdd9b70e97a634e12d989b8307..35bb8de7792eaba7de5417bc60146b9829b0f69c 100644
--- a/Source/core/css/parser/CSSParserImpl.h
+++ b/Source/core/css/parser/CSSParserImpl.h
@@ -10,6 +10,7 @@
 #include "core/css/CSSPropertySourceData.h"
 #include "core/css/parser/CSSParserMode.h"
 #include "core/css/parser/CSSParserTokenRange.h"
+#include "core/css/parser/CSSTokenizer.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Vector.h"
 #include "wtf/text/WTFString.h"
@@ -98,6 +99,7 @@ private:
     void consumeDeclarationList(CSSParserTokenRange, StyleRule::Type);
     void consumeDeclaration(CSSParserTokenRange, StyleRule::Type);
     void consumeDeclarationValue(CSSParserTokenRange, CSSPropertyID, bool important, StyleRule::Type);
+    void consumeVariableDeclarationValue(CSSParserTokenRange, const AtomicString& variableName, bool important);
 
     static PassOwnPtr<Vector<double>> consumeKeyframeKeyList(CSSParserTokenRange);