Fold ScrollingCoordinatorChromium into ScrollingCoordinator and devirtualize

Source/WebCore/page/scrolling/ScrollingTreeScrollingNode.h

Index: Source/WebCore/page/scrolling/ScrollingTreeScrollingNode.h
diff --git a/Source/WebCore/page/scrolling/ScrollingTreeScrollingNode.h b/Source/WebCore/page/scrolling/ScrollingTreeScrollingNode.h
deleted file mode 100644
index ce7f167098a918d76d0b83b4bae61fbbfb68df03..0000000000000000000000000000000000000000
--- a/Source/WebCore/page/scrolling/ScrollingTreeScrollingNode.h
+++ /dev/null
@@ -1,105 +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 ScrollingTreeScrollingNode_h
-#define ScrollingTreeScrollingNode_h
-
-#if ENABLE(THREADED_SCROLLING)
-
-#include "IntRect.h"
-#include "ScrollTypes.h"
-#include "ScrollingCoordinator.h"
-#include "ScrollingTreeNode.h"
-#include <wtf/PassOwnPtr.h>
-
-namespace WebCore {
-
-class PlatformWheelEvent;
-class ScrollingTree;
-class ScrollingStateScrollingNode;
-
-class ScrollingTreeScrollingNode : public ScrollingTreeNode {
-public:
-    static PassOwnPtr<ScrollingTreeScrollingNode> create(ScrollingTree*, ScrollingNodeID);
-    virtual ~ScrollingTreeScrollingNode();
-
-    virtual void updateBeforeChildren(ScrollingStateNode*) OVERRIDE;
-
-    // FIXME: We should implement this when we support ScrollingTreeScrollingNodes as children.
-    virtual void parentScrollPositionDidChange(const IntRect& /*viewportRect*/, const FloatSize& /*cumulativeDelta*/) OVERRIDE { }
-
-    virtual void handleWheelEvent(const PlatformWheelEvent&) = 0;
-    virtual void setScrollPosition(const IntPoint&) = 0;
-
-    MainThreadScrollingReasons shouldUpdateScrollLayerPositionOnMainThread() const { return m_shouldUpdateScrollLayerPositionOnMainThread; }
-
-protected:
-    explicit ScrollingTreeScrollingNode(ScrollingTree*, ScrollingNodeID);
-
-    const IntRect& viewportRect() const { return m_viewportRect; }
-    const IntSize& totalContentsSize() const { return m_totalContentsSize; }
-
-    float frameScaleFactor() const { return m_frameScaleFactor; }
-
-    ScrollElasticity horizontalScrollElasticity() const { return m_horizontalScrollElasticity; }
-    ScrollElasticity verticalScrollElasticity() const { return m_verticalScrollElasticity; }
-
-    bool hasEnabledHorizontalScrollbar() const { return m_hasEnabledHorizontalScrollbar; }
-    bool hasEnabledVerticalScrollbar() const { return m_hasEnabledVerticalScrollbar; }
-
-    bool canHaveScrollbars() const { return m_horizontalScrollbarMode != ScrollbarAlwaysOff || m_verticalScrollbarMode != ScrollbarAlwaysOff; }
-
-    const IntPoint& scrollOrigin() const { return m_scrollOrigin; }
-
-    int headerHeight() const { return m_headerHeight; }
-    int footerHeight() const { return m_footerHeight; }
-
-private:
-    IntRect m_viewportRect;
-    IntSize m_totalContentsSize;
-    IntPoint m_scrollOrigin;
-    
-    float m_frameScaleFactor;
-
-    MainThreadScrollingReasons m_shouldUpdateScrollLayerPositionOnMainThread;
-
-    ScrollElasticity m_horizontalScrollElasticity;
-    ScrollElasticity m_verticalScrollElasticity;
-    
-    bool m_hasEnabledHorizontalScrollbar;
-    bool m_hasEnabledVerticalScrollbar;
-
-    ScrollbarMode m_horizontalScrollbarMode;
-    ScrollbarMode m_verticalScrollbarMode;
-
-    int m_headerHeight;
-    int m_footerHeight;
-};
-
-} // namespace WebCore
-
-#endif // ENABLE(THREADED_SCROLLING)
-
-#endif // ScrollingTreeScrollingNode_h