Remove unused includes from various .cpp files in core/

Source/core/editing/RenderedPosition.cpp

 /*
  * Copyright (C) 2011 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 16 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "core/editing/RenderedPosition.h"
 
 #include "core/dom/Position.h"
 #include "core/editing/VisiblePosition.h"
 #include "core/rendering/InlineBox.h"
-#include "core/rendering/InlineTextBox.h"
 
 namespace WebCore {
 
 static inline RenderObject* rendererFromPosition(const Position& position)
 {
     ASSERT(position.isNotNull());
     Node* rendererNode = 0;
     switch (position.anchorType()) {
     case Position::PositionIsOffsetInAnchor:
         rendererNode = position.computeNodeAfterPosition();
@@ skipping 188 matching lines @@
 bool renderObjectContainsPosition(RenderObject* target, const Position& position)
 {
     for (RenderObject* renderer = rendererFromPosition(position); renderer && renderer->node(); renderer = renderer->parent()) {
         if (renderer == target)
             return true;
     }
     return false;
 }
 
 };