Revert of [Oilpan] Prepare full definition of classes before using Member

third_party/WebKit/Source/core/events/TreeScopeEventContext.cpp

 /*
  * Copyright (C) 2014 Google 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
@@ skipping 57 matching lines @@
 
     for (size_t i = 0; i < path.size(); ++i) {
         if (path[i].treeScopeEventContext().isUnclosedTreeOf(*this))
             m_eventPath->append(path[i].node());
     }
     if (window)
         m_eventPath->append(window);
     return *m_eventPath;
 }
 
-TouchEventContext* TreeScopeEventContext::touchEventContext() const
-{
-    return m_touchEventContext.get();
-}
-
 TouchEventContext* TreeScopeEventContext::ensureTouchEventContext()
 {
     if (!m_touchEventContext)
         m_touchEventContext = TouchEventContext::create();
     return m_touchEventContext.get();
 }
 
 PassRefPtrWillBeRawPtr<TreeScopeEventContext> TreeScopeEventContext::create(TreeScope& treeScope)
 {
     return adoptRefWillBeNoop(new TreeScopeEventContext(treeScope));
@@ skipping 29 matching lines @@
     m_preOrder = orderNumber;
     m_containingClosedShadowTree = (rootNode().isShadowRoot() && !toShadowRoot(rootNode()).isOpen()) ? this : nearestAncestorClosedTreeScopeEventContext;
     for (size_t i = 0; i < m_children.size(); ++i)
         orderNumber = m_children[i]->calculateTreeOrderAndSetNearestAncestorClosedTree(orderNumber + 1, containingClosedShadowTree());
     m_postOrder = orderNumber + 1;
 
     return orderNumber + 1;
 }
 
 } // namespace blink