Remove getNodesInCommand debug method from Editing commands

Source/core/editing/CompositeEditCommand.cpp

 /*
  * Copyright (C) 2005, 2006, 2007, 2008 Apple 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 126 matching lines @@
     m_startingSelection = selection;
     m_startingRootEditableElement = selection.rootEditableElement();
 }
 
 void EditCommandComposition::setEndingSelection(const VisibleSelection& selection)
 {
     m_endingSelection = selection;
     m_endingRootEditableElement = selection.rootEditableElement();
 }
 
-#ifndef NDEBUG
-void EditCommandComposition::getNodesInCommand(HashSet<Node*>& nodes)
-{
-    size_t size = m_commands.size();
-    for (size_t i = 0; i < size; ++i)
-        m_commands[i]->getNodesInCommand(nodes);
-}
-#endif
-
 void applyCommand(PassRefPtr<CompositeEditCommand> command)
 {
     command->apply();
 }
 
 CompositeEditCommand::CompositeEditCommand(Document& document)
     : EditCommand(document)
 {
 }
 
@@ skipping 1298 matching lines @@
     return node.release();
 }
 
 PassRefPtr<Element> createBlockPlaceholderElement(Document& document)
 {
     RefPtr<Element> breakNode = document.createElement(brTag, false);
     return breakNode.release();
 }
 
 } // namespace WebCore