Remove the forced layout in getComputedStyle for elements in Shadow DOM

third_party/WebKit/Source/core/dom/LayoutTreeBuilderTraversal.cpp

 /*
  * Copyright (C) 2012 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Neither the name of Google Inc. nor the names of its
@@ skipping 26 matching lines @@
 
 static bool isLayoutObjectReparented(const LayoutObject* layoutObject)
 {
     if (!layoutObject->node()->isElementNode())
         return false;
     if (toElement(layoutObject->node())->isInTopLayer())
         return true;
     return false;
 }
 
-void ParentDetails::didTraverseInsertionPoint(const InsertionPoint* insertionPoint)
-{
-    if (!m_insertionPoint) {
-        m_insertionPoint = insertionPoint;
-    }
-}
-
 ContainerNode* parent(const Node& node, ParentDetails* details)
 {
     // TODO(hayato): Uncomment this once we can be sure LayoutTreeBuilderTraversal::parent() is used only for a node in a document.
     // ASSERT(node.inDocument());
     return ComposedTreeTraversal::parent(node, details);
 }
 
 Node* nextSibling(const Node& node)
 {
     if (node.isBeforePseudoElement()) {
@@ skipping 179 matching lines @@
     for (size_t i = position + 1; i < topLayerElements.size(); ++i) {
         if (LayoutObject* layoutObject = topLayerElements[i]->layoutObject())
             return layoutObject;
     }
     return 0;
 }
 
 } // namespace LayoutTreeBuilderTraversal
 
 } // namespace blink