Initial import attempt, just to play with. Many things disabled/removed

ui/cc/cc/CCScrollbarLayerImpl.h

Index: ui/cc/cc/CCScrollbarLayerImpl.h
diff --git a/ui/cc/cc/CCScrollbarLayerImpl.h b/ui/cc/cc/CCScrollbarLayerImpl.h
new file mode 100644
index 0000000000000000000000000000000000000000..ece2b9571414bf4256fdb4ee4fd5ea1c7c046f31
--- /dev/null
+++ b/ui/cc/cc/CCScrollbarLayerImpl.h
@@ -0,0 +1,149 @@
+/*
+ * Copyright (C) 2012 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ * 2.  Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef CCScrollbarLayerImpl_h
+#define CCScrollbarLayerImpl_h
+
+#if USE(ACCELERATED_COMPOSITING)
+
+#include "ScrollbarThemeClient.h"
+#include "cc/CCLayerImpl.h"
+
+namespace WebCore {
+
+class ScrollView;
+
+class CCScrollbarLayerImpl : public CCLayerImpl {
+public:
+    static PassOwnPtr<CCScrollbarLayerImpl> create(int id);
+
+    void setScrollbarOverlayStyle(ScrollbarOverlayStyle scrollbarOverlayStyle) { m_scrollbarOverlayStyle = scrollbarOverlayStyle; }
+    void setTickmarks(const Vector<IntRect>& tickmarks) { m_tickmarks = tickmarks; }
+    void setIsScrollableAreaActive(bool isScrollableAreaActive) { m_isScrollableAreaActive = isScrollableAreaActive; }
+    void setIsScrollViewScrollbar(bool isScrollViewScrollbar) { m_isScrollViewScrollbar = isScrollViewScrollbar; }
+
+    void setOrientation(ScrollbarOrientation orientation) { m_orientation = orientation; }
+
+    void setControlSize(ScrollbarControlSize controlSize) { m_controlSize = controlSize; }
+
+    void setPressedPart(ScrollbarPart pressedPart) { m_pressedPart = pressedPart; }
+    void setHoveredPart(ScrollbarPart hoveredPart) { m_hoveredPart = hoveredPart; }
+
+    void setEnabled(bool enabled) { m_enabled = enabled; }
+
+    void setBackTrackTextureId(unsigned id) { m_backTrackTextureId = id; }
+    void setForeTrackTextureId(unsigned id) { m_foreTrackTextureId = id; }
+    void setThumbTextureId(unsigned id) { m_thumbTextureId = id; }
+
+    CCLayerImpl* scrollLayer() const { return m_scrollLayer; }
+    void setScrollLayer(CCLayerImpl* scrollLayer) { m_scrollLayer = scrollLayer; }
+
+    virtual void appendQuads(CCQuadCuller&, const CCSharedQuadState*, bool& hadMissingTiles) OVERRIDE;
+
+protected:
+    explicit CCScrollbarLayerImpl(int id);
+
+private:
+    CCLayerImpl* m_scrollLayer;
+
+    // nested class only to avoid namespace problem
+    class CCScrollbar : public ScrollbarThemeClient {
+    public:
+        explicit CCScrollbar(CCScrollbarLayerImpl* owner) : m_owner(owner) { }
+
+        // ScrollbarThemeClient implementation
+        virtual int x() const;
+        virtual int y() const;
+        virtual int width() const;
+        virtual int height() const;
+        virtual IntSize size() const;
+        virtual IntPoint location() const;
+
+        virtual ScrollView* parent() const;
+        virtual ScrollView* root() const;
+
+        virtual void setFrameRect(const IntRect&);
+        virtual IntRect frameRect() const;
+
+        virtual void invalidate();
+        virtual void invalidateRect(const IntRect&);
+
+        virtual ScrollbarOverlayStyle scrollbarOverlayStyle() const;
+        virtual void getTickmarks(Vector<IntRect>&) const;
+        virtual bool isScrollableAreaActive() const;
+        virtual bool isScrollViewScrollbar() const;
+
+        virtual IntPoint convertFromContainingWindow(const IntPoint& windowPoint);
+
+        virtual bool isCustomScrollbar() const;
+        virtual ScrollbarOrientation orientation() const;
+
+        virtual int value() const;
+        virtual float currentPos() const;
+        virtual int visibleSize() const;
+        virtual int totalSize() const;
+        virtual int maximum() const;
+        virtual ScrollbarControlSize controlSize() const;
+
+        virtual int lineStep() const;
+        virtual int pageStep() const;
+
+        virtual ScrollbarPart pressedPart() const;
+        virtual ScrollbarPart hoveredPart() const;
+
+        virtual void styleChanged();
+
+        virtual bool enabled() const;
+        virtual void setEnabled(bool);
+
+    private:
+        CCScrollbarLayerImpl* m_owner;
+
+    };
+    CCScrollbar m_scrollbar;
+
+    unsigned m_backTrackTextureId;
+    unsigned m_foreTrackTextureId;
+    unsigned m_thumbTextureId;
+
+    ScrollbarOverlayStyle m_scrollbarOverlayStyle;
+    Vector<IntRect> m_tickmarks;
+    bool m_isScrollableAreaActive;
+    bool m_isScrollViewScrollbar;
+
+    ScrollbarOrientation m_orientation;
+
+    ScrollbarControlSize m_controlSize;
+
+    ScrollbarPart m_pressedPart;
+    ScrollbarPart m_hoveredPart;
+
+    bool m_enabled;
+};
+
+}
+#endif // USE(ACCELERATED_COMPOSITING)
+
+#endif