Fold ScrollingCoordinatorChromium into ScrollingCoordinator and devirtualize

Source/WebCore/page/scrolling/ScrollingStateScrollingNode.h

Index: Source/WebCore/page/scrolling/ScrollingStateScrollingNode.h
diff --git a/Source/WebCore/page/scrolling/ScrollingStateScrollingNode.h b/Source/WebCore/page/scrolling/ScrollingStateScrollingNode.h
deleted file mode 100644
index 435136fafcaf8ecf121b170df6bb603b180acfff..0000000000000000000000000000000000000000
--- a/Source/WebCore/page/scrolling/ScrollingStateScrollingNode.h
+++ /dev/null
@@ -1,177 +0,0 @@
-/*
- * Copyright (C) 2012 Apple 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 INC. 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 INC. 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 ScrollingStateScrollingNode_h
-#define ScrollingStateScrollingNode_h
-
-#if ENABLE(THREADED_SCROLLING)
-
-#include "IntRect.h"
-#include "Region.h"
-#include "ScrollTypes.h"
-#include "ScrollingCoordinator.h"
-#include "ScrollingStateNode.h"
-#include <wtf/PassOwnPtr.h>
-
-namespace WebCore {
-
-class ScrollingStateScrollingNode : public ScrollingStateNode {
-public:
-    static PassOwnPtr<ScrollingStateScrollingNode> create(ScrollingStateTree*, ScrollingNodeID);
-
-    virtual PassOwnPtr<ScrollingStateNode> clone();
-
-    virtual ~ScrollingStateScrollingNode();
-
-    enum ChangedProperty {
-        ViewportRect = NumStateNodeBits,
-        TotalContentsSize,
-        FrameScaleFactor,
-        NonFastScrollableRegion,
-        WheelEventHandlerCount,
-        ShouldUpdateScrollLayerPositionOnMainThread,
-        HorizontalScrollElasticity,
-        VerticalScrollElasticity,
-        HasEnabledHorizontalScrollbar,
-        HasEnabledVerticalScrollbar,
-        HorizontalScrollbarMode,
-        VerticalScrollbarMode,
-        ScrollOrigin,
-        RequestedScrollPosition,
-        CounterScrollingLayer,
-        HeaderHeight,
-        FooterHeight
-    };
-
-    virtual bool isScrollingNode() OVERRIDE { return true; }
-
-    const IntRect& viewportRect() const { return m_viewportRect; }
-    void setViewportRect(const IntRect&);
-
-    const IntSize& totalContentsSize() const { return m_totalContentsSize; }
-    void setTotalContentsSize(const IntSize&);
-
-    float frameScaleFactor() const { return m_frameScaleFactor; }
-    void setFrameScaleFactor(float);
-
-    const Region& nonFastScrollableRegion() const { return m_nonFastScrollableRegion; }
-    void setNonFastScrollableRegion(const Region&);
-
-    unsigned wheelEventHandlerCount() const { return m_wheelEventHandlerCount; }
-    void setWheelEventHandlerCount(unsigned);
-
-    MainThreadScrollingReasons shouldUpdateScrollLayerPositionOnMainThread() const { return m_shouldUpdateScrollLayerPositionOnMainThread; }
-    void setShouldUpdateScrollLayerPositionOnMainThread(MainThreadScrollingReasons);
-
-    ScrollElasticity horizontalScrollElasticity() const { return m_horizontalScrollElasticity; }
-    void setHorizontalScrollElasticity(ScrollElasticity);
-
-    ScrollElasticity verticalScrollElasticity() const { return m_verticalScrollElasticity; }
-    void setVerticalScrollElasticity(ScrollElasticity);
-
-    bool hasEnabledHorizontalScrollbar() const { return m_hasEnabledHorizontalScrollbar; }
-    void setHasEnabledHorizontalScrollbar(bool);
-
-    bool hasEnabledVerticalScrollbar() const { return m_hasEnabledVerticalScrollbar; }
-    void setHasEnabledVerticalScrollbar(bool);
-
-    ScrollbarMode horizontalScrollbarMode() const { return m_horizontalScrollbarMode; }
-    void setHorizontalScrollbarMode(ScrollbarMode);
-
-    ScrollbarMode verticalScrollbarMode() const { return m_verticalScrollbarMode; }
-    void setVerticalScrollbarMode(ScrollbarMode);
-
-    const IntPoint& requestedScrollPosition() const { return m_requestedScrollPosition; }
-    void setRequestedScrollPosition(const IntPoint&, bool representsProgrammaticScroll);
-
-    const IntPoint& scrollOrigin() const { return m_scrollOrigin; }
-    void setScrollOrigin(const IntPoint&);
-
-    int headerHeight() const { return m_headerHeight; }
-    void setHeaderHeight(int);
-
-    int footerHeight() const { return m_footerHeight; }
-    void setFooterHeight(int);
-
-    // This is a layer moved in the opposite direction to scrolling, for example for background-attachment:fixed
-    GraphicsLayer* counterScrollingLayer() const { return m_counterScrollingLayer; }
-    void setCounterScrollingLayer(GraphicsLayer*);
-    PlatformLayer* counterScrollingPlatformLayer() const;
-
-    bool requestedScrollPositionRepresentsProgrammaticScroll() const { return m_requestedScrollPositionRepresentsProgrammaticScroll; }
-
-    virtual void dumpProperties(TextStream&, int indent) const OVERRIDE;
-
-private:
-    ScrollingStateScrollingNode(ScrollingStateTree*, ScrollingNodeID);
-    ScrollingStateScrollingNode(const ScrollingStateScrollingNode&);
-
-    GraphicsLayer* m_counterScrollingLayer;
-#if PLATFORM(MAC)
-    RetainPtr<PlatformLayer> m_counterScrollingPlatformLayer;
-#endif
-    
-    IntRect m_viewportRect;
-    IntSize m_totalContentsSize;
-    
-    float m_frameScaleFactor;
-
-    Region m_nonFastScrollableRegion;
-
-    unsigned m_wheelEventHandlerCount;
-
-    MainThreadScrollingReasons m_shouldUpdateScrollLayerPositionOnMainThread;
-
-    ScrollElasticity m_horizontalScrollElasticity;
-    ScrollElasticity m_verticalScrollElasticity;
-
-    bool m_hasEnabledHorizontalScrollbar;
-    bool m_hasEnabledVerticalScrollbar;
-    bool m_requestedScrollPositionRepresentsProgrammaticScroll;
-
-    ScrollbarMode m_horizontalScrollbarMode;
-    ScrollbarMode m_verticalScrollbarMode;
-
-    IntPoint m_requestedScrollPosition;
-    IntPoint m_scrollOrigin;
-
-    int m_headerHeight;
-    int m_footerHeight;
-};
-
-inline ScrollingStateScrollingNode* toScrollingStateScrollingNode(ScrollingStateNode* node)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(!node || node->isScrollingNode());
-    return static_cast<ScrollingStateScrollingNode*>(node);
-}
-    
-// This will catch anyone doing an unnecessary cast.
-void toScrollingStateScrollingNode(const ScrollingStateScrollingNode*);
-
-} // namespace WebCore
-
-#endif // ENABLE(THREADED_SCROLLING)
-
-#endif // ScrollingStateScrollingNode_h