Fold ScrollingCoordinatorChromium into ScrollingCoordinator and devirtualize

Source/WebCore/page/scrolling/ScrollingStateFixedNode.cpp

Index: Source/WebCore/page/scrolling/ScrollingStateFixedNode.cpp
diff --git a/Source/WebCore/page/scrolling/ScrollingStateFixedNode.cpp b/Source/WebCore/page/scrolling/ScrollingStateFixedNode.cpp
deleted file mode 100644
index cef3cb436e8d6774928360bb7e7025cd1eea9d37..0000000000000000000000000000000000000000
--- a/Source/WebCore/page/scrolling/ScrollingStateFixedNode.cpp
+++ /dev/null
@@ -1,116 +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.
- */
-
-#include "config.h"
-#include "ScrollingStateFixedNode.h"
-
-#include "GraphicsLayer.h"
-#include "ScrollingStateTree.h"
-#include "TextStream.h"
-#include <wtf/OwnPtr.h>
-
-#if ENABLE(THREADED_SCROLLING)
-
-namespace WebCore {
-
-PassOwnPtr<ScrollingStateFixedNode> ScrollingStateFixedNode::create(ScrollingStateTree* stateTree, ScrollingNodeID nodeID)
-{
-    return adoptPtr(new ScrollingStateFixedNode(stateTree, nodeID));
-}
-
-ScrollingStateFixedNode::ScrollingStateFixedNode(ScrollingStateTree* tree, ScrollingNodeID nodeID)
-    : ScrollingStateNode(tree, nodeID)
-{
-}
-
-ScrollingStateFixedNode::ScrollingStateFixedNode(const ScrollingStateFixedNode& node)
-    : ScrollingStateNode(node)
-    , m_constraints(FixedPositionViewportConstraints(node.viewportConstraints()))
-{
-}
-
-ScrollingStateFixedNode::~ScrollingStateFixedNode()
-{
-}
-
-PassOwnPtr<ScrollingStateNode> ScrollingStateFixedNode::clone()
-{
-    return adoptPtr(new ScrollingStateFixedNode(*this));
-}
-
-void ScrollingStateFixedNode::updateConstraints(const FixedPositionViewportConstraints& constraints)
-{
-    if (m_constraints == constraints)
-        return;
-
-    m_constraints = constraints;
-    setPropertyChanged(ViewportConstraints);
-    m_scrollingStateTree->setHasChangedProperties(true);
-}
-
-void ScrollingStateFixedNode::syncLayerPositionForViewportRect(const LayoutRect& viewportRect)
-{
-    FloatPoint position = m_constraints.layerPositionForViewportRect(viewportRect);
-    graphicsLayer()->syncPosition(position);
-}
-
-void ScrollingStateFixedNode::dumpProperties(TextStream& ts, int indent) const
-{
-    ts << "(" << "Fixed node" << "\n";
-
-    if (m_constraints.anchorEdges()) {
-        writeIndent(ts, indent + 1);
-        ts << "(anchor edges: ";
-        if (m_constraints.hasAnchorEdge(ViewportConstraints::AnchorEdgeLeft))
-            ts << "AnchorEdgeLeft ";
-        if (m_constraints.hasAnchorEdge(ViewportConstraints::AnchorEdgeRight))
-            ts << "AnchorEdgeRight ";
-        if (m_constraints.hasAnchorEdge(ViewportConstraints::AnchorEdgeTop))
-            ts << "AnchorEdgeTop";
-        if (m_constraints.hasAnchorEdge(ViewportConstraints::AnchorEdgeBottom))
-            ts << "AnchorEdgeBottom";
-        ts << ")\n";
-    }
-
-    if (!m_constraints.alignmentOffset().isEmpty()) {
-        writeIndent(ts, indent + 1);
-        ts << "(alignment offset " << m_constraints.alignmentOffset().width() << " " << m_constraints.alignmentOffset().height() << ")\n";
-    }
-
-    if (!m_constraints.viewportRectAtLastLayout().isEmpty()) {
-        writeIndent(ts, indent + 1);
-        FloatRect viewportRect = m_constraints.viewportRectAtLastLayout();
-        ts << "(viewport rect at last layout: " << viewportRect.x() << " " << viewportRect.y() << " " << viewportRect.width() << " " << viewportRect.height() << ")\n";
-    }
-
-    if (m_constraints.layerPositionAtLastLayout() != FloatPoint()) {
-        writeIndent(ts, indent + 1);
-        ts << "(layer position at last layout " << m_constraints.layerPositionAtLastLayout().x() << " " << m_constraints.layerPositionAtLastLayout().y() << ")\n";
-    }
-}
-
-} // namespace WebCore
-
-#endif // ENABLE(THREADED_SCROLLING)