Fold ScrollingCoordinatorChromium into ScrollingCoordinator and devirtualize

Source/WebCore/page/scrolling/ScrollingTreeNode.cpp

Index: Source/WebCore/page/scrolling/ScrollingTreeNode.cpp
diff --git a/Source/WebCore/page/scrolling/ScrollingTreeNode.cpp b/Source/WebCore/page/scrolling/ScrollingTreeNode.cpp
deleted file mode 100644
index d810b408f6cca71e62858044a8f77c7531af4cae..0000000000000000000000000000000000000000
--- a/Source/WebCore/page/scrolling/ScrollingTreeNode.cpp
+++ /dev/null
@@ -1,77 +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 "ScrollingTreeNode.h"
-
-#if ENABLE(THREADED_SCROLLING)
-
-#include "ScrollingStateTree.h"
-
-namespace WebCore {
-
-ScrollingTreeNode::ScrollingTreeNode(ScrollingTree* scrollingTree, ScrollingNodeID nodeID)
-    : m_scrollingTree(scrollingTree)
-    , m_nodeID(nodeID)
-    , m_parent(0)
-{
-}
-
-ScrollingTreeNode::~ScrollingTreeNode()
-{
-}
-
-void ScrollingTreeNode::appendChild(PassOwnPtr<ScrollingTreeNode> childNode)
-{
-    childNode->setParent(this);
-
-    if (!m_children)
-        m_children = adoptPtr(new Vector<OwnPtr<ScrollingTreeNode> >);
-
-    m_children->append(childNode);
-}
-
-void ScrollingTreeNode::removeChild(ScrollingTreeNode* node)
-{
-    if (!m_children)
-        return;
-
-    size_t index = m_children->find(node);
-
-    // The index will be notFound if the node to remove is a deeper-than-1-level descendant or
-    // if node is the root state node.
-    if (index != notFound) {
-        m_children->remove(index);
-        return;
-    }
-
-    size_t size = m_children->size();
-    for (size_t i = 0; i < size; ++i)
-        m_children->at(i)->removeChild(node);
-}
-
-} // namespace WebCore
-
-#endif // ENABLE(THREADED_SCROLLING)