Avoid removing destination during moving paragrahs

Source/core/editing/CompositeEditCommand.h

 /*
  * Copyright (C) 2005, 2006, 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 106 matching lines @@
     void rebalanceWhitespaceOnTextSubstring(PassRefPtr<Text>, int startOffset, int endOffset);
     void prepareWhitespaceAtPositionForSplit(Position&);
     bool canRebalance(const Position&) const;
     bool shouldRebalanceLeadingWhitespaceFor(const String&) const;
     void removeCSSProperty(PassRefPtr<Element>, CSSPropertyID);
     void removeNodeAttribute(PassRefPtr<Element>, const QualifiedName& attribute);
     void removeChildrenInRange(PassRefPtr<Node>, unsigned from, unsigned to);
     virtual void removeNode(PassRefPtr<Node>, ShouldAssumeContentIsAlwaysEditable = DoNotAssumeContentIsAlwaysEditable);
     HTMLElement* replaceElementWithSpanPreservingChildrenAndAttributes(PassRefPtr<HTMLElement>);
     void removeNodePreservingChildren(PassRefPtr<Node>, ShouldAssumeContentIsAlwaysEditable = DoNotAssumeContentIsAlwaysEditable);
-    void removeNodeAndPruneAncestors(PassRefPtr<Node>);
+    void removeNodeAndPruneAncestors(PassRefPtr<Node>, Node* excludeNode = 0);
     void moveRemainingSiblingsToNewParent(Node*, Node* pastLastNodeToMove, PassRefPtr<Element> prpNewParent);
     void updatePositionForNodeRemovalPreservingChildren(Position&, Node*);
-    void prune(PassRefPtr<Node>);
+    void prune(PassRefPtr<Node>, Node* excludeNode = 0);
     void replaceTextInNode(PassRefPtr<Text>, unsigned offset, unsigned count, const String& replacementText);
     Position replaceSelectedTextInNode(const String&);
     void replaceTextInNodePreservingMarkers(PassRefPtr<Text>, unsigned offset, unsigned count, const String& replacementText);
     Position positionOutsideTabSpan(const Position&);
     void setNodeAttribute(PassRefPtr<Element>, const QualifiedName& attribute, const AtomicString& value);
     void splitElement(PassRefPtr<Element>, PassRefPtr<Node> atChild);
     void splitTextNode(PassRefPtr<Text>, unsigned offset);
     void splitTextNodeContainingElement(PassRefPtr<Text>, unsigned offset);
     void wrapContentsInDummySpan(PassRefPtr<Element>);
 
@@ skipping 39 matching lines @@
 inline CompositeEditCommand* toCompositeEditCommand(EditCommand* command)
 {
     ASSERT(command);
     ASSERT(command->isCompositeEditCommand());
     return static_cast<CompositeEditCommand*>(command);
 }
 
 } // namespace WebCore
 
 #endif // CompositeEditCommand_h