A sizes attribute parser

Source/core/css/MediaValuesCached.h

Index: Source/core/css/MediaValuesCached.h
diff --git a/Source/core/css/MediaValuesCached.h b/Source/core/css/MediaValuesCached.h
new file mode 100644
index 0000000000000000000000000000000000000000..f475ed2b3f987528b4e07665718e1efd5c05bcd9
--- /dev/null
+++ b/Source/core/css/MediaValuesCached.h
@@ -0,0 +1,63 @@
+// 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 MediaValuesCached_h
+#define MediaValuesCached_h
+
+#include "core/css/MediaValues.h"
+
+namespace WebCore {
+
+class MediaValuesCached : public MediaValues {

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

Please mark the class as FINAL.

+public:
+    static PassRefPtr<MediaValues> create(LocalFrame*, RenderStyle*);
+    static PassRefPtr<MediaValues> create(MediaValuesInitializer&);
+    virtual PassRefPtr<MediaValues> copy() const;
+    virtual bool isSafeToSendToAnotherThread() const;

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

These are all OVERRIDE.

+    virtual bool computeLength(CSSPrimitiveValue&, int& result) const;
+
+    virtual int viewportWidth() const;
+    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:
+    MediaValuesCached(LocalFrame*, RenderStyle*);
+    MediaValuesCached(MediaValuesInitializer&);
+
+    // Members variables beyond this point must be thread safe, since they're copied to the parser thread
+    int m_viewportWidth;
+    int m_viewportHeight;
+    int m_deviceWidth;
+    int m_deviceHeight;
+    float m_devicePixelRatio;
+    int m_colorBitsPerComponent;
+    int m_monochromeBitsPerComponent;
+    PointerDeviceType m_pointer;
+    int m_defaultFontSize;
+    int m_computedFontSize;
+    bool m_hasXHeight;
+    double m_xHeight;
+    double m_zeroWidth;
+    bool m_threeDEnabled;
+    bool m_scanMediaType;
+    bool m_screenMediaType;
+    bool m_printMediaType;
+    bool m_strictMode;
+};
+
+} // namespace
+
+#endif // MediaValuesCached_h