Revert "A sizes attribute parser" (https://codereview.chromium.org/224733011)

Source/core/css/parser/SizesAttributeParser.h

-// Copyright 2014 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 SizesAttributeParser_h
-#define SizesAttributeParser_h
-
-#include "core/css/MediaValues.h"
-#include "core/css/parser/MediaQueryParser.h"
-#include "wtf/text/WTFString.h"
-
-namespace WebCore {
-
-class SizesAttributeParser {
-public:
-    static unsigned findEffectiveSize(const String& attribute, PassRefPtr<MediaValues>);
-
-private:
-    SizesAttributeParser(PassRefPtr<MediaValues> mediaValues)
-        : m_mediaValues(mediaValues)
-        , m_length(0)
-    {
-    }
-
-    bool parse(Vector<MediaQueryToken>& tokens);
-    bool parseMediaConditionAndLength(TokenIterator startToken, TokenIterator endToken);
-    unsigned effectiveSize();
-    bool calculateLengthInPixels(TokenIterator startToken, TokenIterator endToken, unsigned& result);
-    bool mediaConditionMatches(PassRefPtr<MediaQuerySet> mediaCondition);
-    unsigned effectiveSizeDefaultValue();
-
-    RefPtr<MediaQuerySet> m_mediaCondition;
-    RefPtr<MediaValues> m_mediaValues;
-    unsigned m_length;
-};
-
-} // namespace
-
-#endif
-