Move rendering/RenderObject to layout/LayoutObject.

Source/core/editing/DeleteSelectionCommand.cpp

 /*
  * Copyright (C) 2005 Apple Computer, 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 356 matching lines @@
         // Likewise for the root editable element.
         Node* child = node->firstChild();
         while (child) {
             Node* remove = child;
             child = child->nextSibling();
             removeNode(remove, shouldAssumeContentIsAlwaysEditable);
         }
 
         // Make sure empty cell has some height, if a placeholder can be inserted.
         document().updateLayoutIgnorePendingStylesheets();
-        RenderObject *r = node->renderer();
+        LayoutObject* r = node->renderer();
         if (r && r->isTableCell() && toLayoutTableCell(r)->contentHeight() <= 0) {
             Position firstEditablePosition = firstEditablePositionInNode(node.get());
             if (firstEditablePosition.isNotNull())
                 insertBlockPlaceholder(firstEditablePosition);
         }
         return;
     }
 
     if (node == m_startBlock) {
         VisiblePosition previous = VisiblePosition(firstPositionInNode(m_startBlock.get())).previous();
@@ skipping 503 matching lines @@
     visitor->trace(m_deleteIntoBlockquoteStyle);
     visitor->trace(m_startRoot);
     visitor->trace(m_endRoot);
     visitor->trace(m_startTableRow);
     visitor->trace(m_endTableRow);
     visitor->trace(m_temporaryPlaceholder);
     CompositeEditCommand::trace(visitor);
 }
 
 } // namespace blink