Fold ScrollingCoordinatorChromium into ScrollingCoordinator and devirtualize

Source/WebCore/page/scrolling/ScrollingStateFixedNode.h

Index: Source/WebCore/page/scrolling/ScrollingStateFixedNode.h
diff --git a/Source/WebCore/page/scrolling/ScrollingStateFixedNode.h b/Source/WebCore/page/scrolling/ScrollingStateFixedNode.h
deleted file mode 100644
index 61a2aec636668db10185573b5e8fccad18b6d850..0000000000000000000000000000000000000000
--- a/Source/WebCore/page/scrolling/ScrollingStateFixedNode.h
+++ /dev/null
@@ -1,81 +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 ScrollingStateFixedNode_h
-#define ScrollingStateFixedNode_h
-
-#if ENABLE(THREADED_SCROLLING)
-
-#include "ScrollingConstraints.h"
-#include "ScrollingStateNode.h"
-
-#include <wtf/Forward.h>
-
-namespace WebCore {
-
-class FixedPositionViewportConstraints;
-
-class ScrollingStateFixedNode : public ScrollingStateNode {
-public:
-    static PassOwnPtr<ScrollingStateFixedNode> create(ScrollingStateTree*, ScrollingNodeID);
-
-    virtual PassOwnPtr<ScrollingStateNode> clone();
-
-    virtual ~ScrollingStateFixedNode();
-
-    enum {
-        ViewportConstraints = NumStateNodeBits
-    };
-
-    void updateConstraints(const FixedPositionViewportConstraints&);
-    const FixedPositionViewportConstraints& viewportConstraints() const { return m_constraints; }
-
-private:
-    ScrollingStateFixedNode(ScrollingStateTree*, ScrollingNodeID);
-    ScrollingStateFixedNode(const ScrollingStateFixedNode&);
-
-    virtual bool isFixedNode() OVERRIDE { return true; }
-
-    virtual void syncLayerPositionForViewportRect(const LayoutRect& viewportRect) OVERRIDE;
-
-    virtual void dumpProperties(TextStream&, int indent) const OVERRIDE;
-
-    FixedPositionViewportConstraints m_constraints;
-};
-
-inline ScrollingStateFixedNode* toScrollingStateFixedNode(ScrollingStateNode* node)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(!node || node->isFixedNode());
-    return static_cast<ScrollingStateFixedNode*>(node);
-}
-    
-// This will catch anyone doing an unnecessary cast.
-void toScrollingStateFixedNode(const ScrollingStateFixedNode*);
-
-} // namespace WebCore
-
-#endif // ENABLE(THREADED_SCROLLING)
-
-#endif // ScrollingStateFixedNode_h