Fold ScrollingCoordinatorChromium into ScrollingCoordinator and devirtualize

Source/WebCore/page/scrolling/ScrollingTreeNode.h

Index: Source/WebCore/page/scrolling/ScrollingTreeNode.h
diff --git a/Source/WebCore/page/scrolling/ScrollingTreeNode.h b/Source/WebCore/page/scrolling/ScrollingTreeNode.h
deleted file mode 100644
index 56e100d0ef09fb7e541f17e86a83838b912a6c06..0000000000000000000000000000000000000000
--- a/Source/WebCore/page/scrolling/ScrollingTreeNode.h
+++ /dev/null
@@ -1,78 +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 ScrollingTreeNode_h
-#define ScrollingTreeNode_h
-
-#if ENABLE(THREADED_SCROLLING)
-
-#include "IntRect.h"
-#include "ScrollTypes.h"
-#include "ScrollingCoordinator.h"
-#include <wtf/PassOwnPtr.h>
-
-namespace WebCore {
-
-class ScrollingStateFixedNode;
-class ScrollingStateNode;
-class ScrollingStateScrollingNode;
-
-class ScrollingTreeNode {
-public:
-    explicit ScrollingTreeNode(ScrollingTree*, ScrollingNodeID);
-    virtual ~ScrollingTreeNode();
-
-    virtual void updateBeforeChildren(ScrollingStateNode*) = 0;
-    virtual void updateAfterChildren(ScrollingStateNode*) { }
-
-    virtual void parentScrollPositionDidChange(const IntRect& viewportRect, const FloatSize& cumulativeDelta) = 0;
-
-    ScrollingNodeID scrollingNodeID() const { return m_nodeID; }
-
-    ScrollingTreeNode* parent() const { return m_parent; }
-    void setParent(ScrollingTreeNode* parent) { m_parent = parent; }
-
-    void appendChild(PassOwnPtr<ScrollingTreeNode>);
-    void removeChild(ScrollingTreeNode*);
-
-protected:
-    ScrollingTree* scrollingTree() const { return m_scrollingTree; }
-
-    typedef Vector<OwnPtr<ScrollingTreeNode> > ScrollingTreeChildrenVector;
-    OwnPtr<ScrollingTreeChildrenVector> m_children;
-
-private:
-    ScrollingTree* m_scrollingTree;
-
-    ScrollingNodeID m_nodeID;
-
-    ScrollingTreeNode* m_parent;
-};
-
-} // namespace WebCore
-
-#endif // ENABLE(THREADED_SCROLLING)
-
-#endif // ScrollingTreeNode_h