Fold ScrollingCoordinatorChromium into ScrollingCoordinator and devirtualize

Source/WebCore/page/scrolling/mac/ScrollingStateScrollingNodeMac.mm

Index: Source/WebCore/page/scrolling/mac/ScrollingStateScrollingNodeMac.mm
diff --git a/Source/WebCore/page/scrolling/mac/ScrollingStateScrollingNodeMac.mm b/Source/WebCore/page/scrolling/mac/ScrollingStateScrollingNodeMac.mm
deleted file mode 100644
index 89fede93736eb1b735713ecce53eb15cbb6a6ddf..0000000000000000000000000000000000000000
--- a/Source/WebCore/page/scrolling/mac/ScrollingStateScrollingNodeMac.mm
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * Copyright (C) 2013 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 "ScrollingStateScrollingNode.h"
-
-#include "GraphicsLayer.h"
-#include "ScrollingStateTree.h"
-
-#if ENABLE(THREADED_SCROLLING)
-
-namespace WebCore {
-
-PlatformLayer* ScrollingStateScrollingNode::counterScrollingPlatformLayer() const
-{
-    return m_counterScrollingPlatformLayer.get();
-}
-
-void ScrollingStateScrollingNode::setCounterScrollingLayer(GraphicsLayer* graphicsLayer)
-{
-    PlatformLayer* platformScrollLayer = graphicsLayer ? graphicsLayer->platformLayer() : nil;
-    if (m_counterScrollingPlatformLayer == platformScrollLayer)
-        return;
-
-    m_counterScrollingPlatformLayer = platformScrollLayer;
-    m_counterScrollingLayer = graphicsLayer;
-
-    setPropertyChanged(CounterScrollingLayer);
-    if (m_scrollingStateTree)
-        m_scrollingStateTree->setHasChangedProperties(true);
-}
-
-} // namespace WebCore
-
-#endif // ENABLE(THREADED_SCROLLING)