Revert "CSS Custom Properties (Variables)"

third_party/WebKit/Source/core/css/CSSVariableData.h

-// 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 CSSVariableData_h
-#define CSSVariableData_h
-
-#include "core/css/parser/CSSParserToken.h"
-#include "core/css/parser/CSSParserTokenRange.h"
-#include "wtf/RefCounted.h"
-#include "wtf/text/WTFString.h"
-
-namespace blink {
-
-class CSSParserTokenRange;
-
-class CSSVariableData : public RefCounted<CSSVariableData> {
-    WTF_MAKE_NONCOPYABLE(CSSVariableData);
-    USING_FAST_MALLOC(CSSVariableData);
-public:
-    static PassRefPtr<CSSVariableData> create(const CSSParserTokenRange& range, bool needsVariableResolution = true)
-    {
-        return adoptRef(new CSSVariableData(range, needsVariableResolution));
-    }
-
-    static PassRefPtr<CSSVariableData> createResolved(const Vector<CSSParserToken>& resolvedTokens)
-    {
-        return adoptRef(new CSSVariableData(resolvedTokens));
-    }
-
-    CSSParserTokenRange tokenRange() { return m_tokens; }
-
-    const Vector<CSSParserToken>& tokens() { return m_tokens; }
-
-    bool needsVariableResolution() const { return m_needsVariableResolution; }
-private:
-    CSSVariableData(const CSSParserTokenRange&, bool needsVariableResolution);
-
-    // We can safely copy the tokens (which have raw pointers to substrings) because
-    // StylePropertySets contain references to CSSCustomPropertyDeclarations, which
-    // point to the unresolved CSSVariableData values that own the backing strings
-    // this will potentially reference.
-    CSSVariableData(const Vector<CSSParserToken>& resolvedTokens)
-        : m_tokens(resolvedTokens)
-        , m_needsVariableResolution(false)
-    { }
-
-    void consumeAndUpdateTokens(const CSSParserTokenRange&);
-    template<typename CharacterType> void updateTokens(const CSSParserTokenRange&);
-
-    String m_backingString;
-    Vector<CSSParserToken> m_tokens;
-    const bool m_needsVariableResolution;
-};
-
-} // namespace blink
-
-#endif // CSSVariableData_h