A sizes attribute parser

Source/core/css/MediaValuesDynamic.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 MediaValuesDynamic_h
+#define MediaValuesDynamic_h
+
+#include "core/css/MediaValues.h"
+
+namespace WebCore {
+
+class Document;
+
+class MediaValuesDynamic : public MediaValues {

[eseidel, 2014/04/14 23:10:13]

You should mark this class as FINAL.

+public:
+    static PassRefPtr<MediaValues> create(PassRefPtr<LocalFrame>, PassRefPtr<RenderStyle>);
+    virtual PassRefPtr<MediaValues> copy() const;
+    virtual bool isSafeToSendToAnotherThread() const;
+    virtual bool computeLength(CSSPrimitiveValue&, int& result) const;
+
+    virtual int viewportWidth() const;

[eseidel, 2014/04/14 23:10:13]

These are all OVERRIDE.

+    virtual int viewportHeight() const;
+    virtual int deviceWidth() const;
+    virtual int deviceHeight() const;
+    virtual float devicePixelRatio() const;
+    virtual int colorBitsPerComponent() const;
+    virtual int monochromeBitsPerComponent() const;
+    virtual PointerDeviceType pointer() const;
+    virtual bool threeDEnabled() const;
+    virtual bool scanMediaType() const;
+    virtual bool screenMediaType() const;
+    virtual bool printMediaType() const;
+    virtual bool strictMode() const;
+    virtual Document* document() const;
+    virtual bool hasValues() const;
+
+protected:
+    MediaValuesDynamic(PassRefPtr<LocalFrame>, PassRefPtr<RenderStyle>);
+
+    RefPtr<RenderStyle> m_style;
+    RefPtr<LocalFrame> m_frame;
+};
+
+} // namespace
+
+#endif // MediaValuesDynamic_h