Remove tons of OILPAN.

sky/engine/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 655 matching lines @@
 }
 
 // Normally deletion doesn't preserve the typing style that was present before it.  For example,
 // type a character, Bold, then delete the character and start typing.  The Bold typing style shouldn't
 // stick around.  Deletion should preserve a typing style that *it* sets, however.
 bool DeleteSelectionCommand::preservesTypingStyle() const
 {
     return false;
 }
 
-void DeleteSelectionCommand::trace(Visitor* visitor)
-{
-    visitor->trace(m_selectionToDelete);
-    visitor->trace(m_upstreamStart);
-    visitor->trace(m_downstreamStart);
-    visitor->trace(m_upstreamEnd);
-    visitor->trace(m_downstreamEnd);
-    visitor->trace(m_endingPosition);
-    visitor->trace(m_leadingWhitespace);
-    visitor->trace(m_trailingWhitespace);
-    visitor->trace(m_startBlock);
-    visitor->trace(m_endBlock);
-    visitor->trace(m_deleteIntoBlockquoteStyle);
-    visitor->trace(m_startRoot);
-    visitor->trace(m_endRoot);
-    visitor->trace(m_temporaryPlaceholder);
-    CompositeEditCommand::trace(visitor);
-}
-
 } // namespace blink