Revert "CSS Custom Properties (Variables)"

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

Index: third_party/WebKit/Source/core/css/resolver/CSSVariableResolver.h
diff --git a/third_party/WebKit/Source/core/css/resolver/CSSVariableResolver.h b/third_party/WebKit/Source/core/css/resolver/CSSVariableResolver.h
deleted file mode 100644
index fb832cce7387278e5194fafec140e2e1e10fc54d..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/core/css/resolver/CSSVariableResolver.h
+++ /dev/null
@@ -1,39 +0,0 @@
-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef CSSVariableResolver_h
-#define CSSVariableResolver_h
-
-#include "core/CSSPropertyNames.h"
-#include "core/css/parser/CSSParserToken.h"
-#include "wtf/HashSet.h"
-#include "wtf/text/AtomicString.h"
-#include "wtf/text/AtomicStringHash.h"
-
-namespace blink {
-
-class CSSVariableReferenceValue;
-class StyleResolverState;
-class StyleVariableData;
-
-class CSSVariableResolver {
-public:
-    static void resolveVariableDefinitions(StyleVariableData*);
-    static void resolveAndApplyVariableReferences(StyleResolverState&, CSSPropertyID, const CSSVariableReferenceValue&);
-
-private:
-    CSSVariableResolver(StyleVariableData*);
-    CSSVariableResolver(StyleVariableData*, AtomicString& variable);
-
-    unsigned resolveVariableTokensRecursive(Vector<CSSParserToken>&, unsigned startOffset);
-    void resolveVariableReferencesFromTokens(Vector<CSSParserToken>& tokens);
-
-    StyleVariableData* m_styleVariableData;
-    HashSet<AtomicString> m_variablesSeen;
-    bool m_cycleDetected;
-};
-
-} // namespace blink
-
-#endif // CSSVariableResolver