Refactoring: Removing unused variables and duplicate function call.

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 657 matching lines @@
     Text* textNode = toText(node);
 
     if (textNode->length() == 0)
         return;
     RenderObject* renderer = textNode->renderer();
     if (renderer && !renderer->style()->collapseWhiteSpace())
         return;
 
     // Delete collapsed whitespace so that inserting nbsps doesn't uncollapse it.
     Position upstreamPos = position.upstream();
-    deleteInsignificantText(position.upstream(), position.downstream());
+    deleteInsignificantText(upstreamPos, position.downstream());
     position = upstreamPos.downstream();
 
     VisiblePosition visiblePos(position);
     VisiblePosition previousVisiblePos(visiblePos.previous());
     replaceCollapsibleWhitespaceWithNonBreakingSpaceIfNeeded(previousVisiblePos);
     replaceCollapsibleWhitespaceWithNonBreakingSpaceIfNeeded(visiblePos);
 }
 
 void CompositeEditCommand::replaceCollapsibleWhitespaceWithNonBreakingSpaceIfNeeded(const VisiblePosition& visiblePosition)
 {
@@ skipping 767 matching lines @@
     return node.release();
 }
 
 PassRefPtr<Element> createBlockPlaceholderElement(Document& document)
 {
     RefPtr<Element> breakNode = document.createElement(brTag, false);
     return breakNode.release();
 }
 
 } // namespace WebCore