Made ElementRareData store ComputedStyle on LayoutObject if possible.

third_party/WebKit/Source/core/dom/NodeRareData.h

 /*
  * Copyright (C) 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2008 David Smith <catfish.man@gmail.com>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 42 matching lines @@
         }
         for (auto registration : transientRegistry) {
             visitor->traceWrappers(registration);
         }
     }
 
 private:
     NodeMutationObserverData() { }
 };
 
-class NodeRareData : public GarbageCollectedFinalized<NodeRareData>, public NodeRareDataBase {
+class CORE_EXPORT NodeRareData : public GarbageCollectedFinalized<NodeRareData>, public NodeRareDataBase {
     WTF_MAKE_NONCOPYABLE(NodeRareData);
 public:
     static NodeRareData* create(LayoutObject* layoutObject)
     {
         return new NodeRareData(layoutObject);
     }
 
     void clearNodeLists() { m_nodeLists.clear(); }
     NodeListsNodeData* nodeLists() const { return m_nodeLists.get(); }
     NodeListsNodeData& ensureNodeLists()
@@ skipping 58 matching lines @@
     unsigned m_connectedFrameCount : ConnectedFrameCountBits;
     unsigned m_elementFlags : NumberOfElementFlags;
     unsigned m_restyleFlags : NumberOfDynamicRestyleFlags;
 protected:
     unsigned m_isElementRareData : 1;
 };
 
 } // namespace blink
 
 #endif // NodeRareData_h