Remove unused/unneeded code from core/editing.

Source/core/editing/Caret.h

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 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 41 matching lines @@
     // PositionWithAffinity version if possible.
     // A position in HTMLTextFromControlElement is a typical example.
     bool updateCaretRect(Document*, const PositionWithAffinity& caretPosition);
     bool updateCaretRect(Document*, const VisiblePosition& caretPosition);
     IntRect absoluteBoundsForLocalRect(Node*, const LayoutRect&) const;
     bool shouldRepaintCaret(const RenderView*, bool isContentEditable) const;
     void paintCaret(Node*, GraphicsContext*, const LayoutPoint&, const LayoutRect& clipRect) const;
 
     const LayoutRect& localCaretRectWithoutUpdate() const { return m_caretLocalRect; }
 
-    bool shouldUpdateCaretRect() const { return m_caretRectNeedsUpdate; }
-    void setCaretRectNeedsUpdate() { m_caretRectNeedsUpdate = true; }
-
     void setCaretVisibility(CaretVisibility visibility) { m_caretVisibility = visibility; }
     bool caretIsVisible() const { return m_caretVisibility == Visible; }
     CaretVisibility caretVisibility() const { return m_caretVisibility; }
 
 protected:
     static RenderBlock* caretRenderer(Node*);
     static void invalidateLocalCaretRect(Node*, const LayoutRect&);
 
 private:
     LayoutRect m_caretLocalRect; // caret rect in coords local to the renderer responsible for painting the caret
-    bool m_caretRectNeedsUpdate; // true if m_caretRect (and m_absCaretBounds in FrameSelection) need to be calculated
     CaretVisibility m_caretVisibility;
 };
 
 class DragCaretController final : public NoBaseWillBeGarbageCollected<DragCaretController>, private CaretBase {
     WTF_MAKE_NONCOPYABLE(DragCaretController);
     WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
 public:
     static PassOwnPtrWillBeRawPtr<DragCaretController> create();
 
     RenderBlock* caretRenderer() const;
@@ skipping 14 matching lines @@
 private:
     DragCaretController();
 
     VisiblePosition m_position;
 };
 
 } // namespace blink
 
 
 #endif // Caret_h