Make first-letter style to work with editing

Source/core/editing/FrameSelection.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 43 matching lines @@
     DoNotRevealExtent
 };
 
 class CaretBase {
     WTF_MAKE_NONCOPYABLE(CaretBase);
     WTF_MAKE_FAST_ALLOCATED;
 protected:
     enum CaretVisibility { Visible, Hidden };
     explicit CaretBase(CaretVisibility = Hidden);
 
-    void invalidateCaretRect(Node*, bool caretRectChanged = false);
+    void invalidateCaretRect(const Position&, bool caretRectChanged = false);
     void clearCaretRect();
     bool updateCaretRect(Document*, const VisiblePosition& caretPosition);
-    IntRect absoluteBoundsForLocalRect(Node*, const LayoutRect&) const;
+    IntRect absoluteBoundsForLocalRect(const Position&, const LayoutRect&) const;
     bool shouldRepaintCaret(const RenderView*, bool isContentEditable) const;
-    void paintCaret(Node*, GraphicsContext*, const LayoutPoint&, const LayoutRect& clipRect) const;
+    void paintCaret(const Position&, 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; }
 
@@ skipping 219 matching lines @@
     bool visualWordMovementEnabled() const;
 
     Frame* m_frame;
 
     LayoutUnit m_xPosForVerticalArrowNavigation;
 
     VisibleSelection m_selection;
     VisiblePosition m_originalBase; // Used to store base before the adjustment at bidi boundary
     TextGranularity m_granularity;
 
-    RefPtr<Node> m_previousCaretNode; // The last node which painted the caret. Retained for clearing the old caret when it moves.
+    Position m_previousCaretPosition; // The last position which painted the caret. Retained for clearing the old caret when it moves.
 
     RefPtr<EditingStyle> m_typingStyle;
 
     Timer<FrameSelection> m_caretBlinkTimer;
     // The painted bounds of the caret in absolute coordinates
     IntRect m_absCaretBounds;
     bool m_absCaretBoundsDirty : 1;
     bool m_caretPaint : 1;
     bool m_isCaretBlinkingSuspended : 1;
     bool m_focused : 1;
@@ skipping 16 matching lines @@
 }
 } // namespace WebCore
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showTree(const WebCore::FrameSelection&);
 void showTree(const WebCore::FrameSelection*);
 #endif
 
 #endif // FrameSelection_h