Introduce lineDirectionPointForBlockDirectionNavigationOf() for VisiblePosition

Source/core/editing/VisiblePosition.h

 /*
  * Copyright (C) 2004, 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 97 matching lines @@
     UChar32 characterAfter() const;
     UChar32 characterBefore() const { return previous().characterAfter(); }
 
     // FIXME: This does not handle [table, 0] correctly.
     Element* rootEditableElement() const { return m_deepPosition.isNotNull() ? m_deepPosition.anchorNode()->rootEditableElement() : 0; }
 
     // Rect is local to the returned layoutObject
     LayoutRect localCaretRect(LayoutObject*&) const;
     // Bounds of (possibly transformed) caret in absolute coords
     IntRect absoluteCaretBounds() const;
-    // Abs x/y position of the caret ignoring transforms.
-    // FIXME: navigation with transforms should be smarter.
-    int lineDirectionPointForBlockDirectionNavigation() const;
 
     DECLARE_TRACE();
 
 #ifndef NDEBUG
     void debugPosition(const char* msg = "") const;
     void formatForDebugger(char* buffer, unsigned length) const;
     void showTreeForThis() const;
 #endif
 
 private:
     template<typename Strategy>
     void init(const PositionAlgorithm<Strategy>&, TextAffinity);
 
     Position leftVisuallyDistinctCandidate() const;
     Position rightVisuallyDistinctCandidate() const;
 
     Position m_deepPosition;
     TextAffinity m_affinity;
 };
 
+// Abs x/y position of the caret ignoring transforms.
+// TODO(yosin) navigation with transforms should be smarter.
+// TODO(yosin) We should move a glboal funciton
+// |lineDirectionPointForBlockDirectionNavigationOf()| to "FrameSelection.h"
+// as static function.
+int lineDirectionPointForBlockDirectionNavigationOf(const VisiblePosition&);
+
 EphemeralRange makeRange(const VisiblePosition&, const VisiblePosition&);
 
 CORE_EXPORT Position canonicalPositionOf(const Position&);
 CORE_EXPORT PositionInComposedTree canonicalPositionOf(const PositionInComposedTree&);
 PositionWithAffinity honorEditingBoundaryAtOrBeforeOf(const PositionWithAffinity&, const Position& anchor);
 PositionInComposedTreeWithAffinity honorEditingBoundaryAtOrBeforeOf(const PositionInComposedTreeWithAffinity&, const PositionInComposedTree& anchor);
 
 } // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showTree(const blink::VisiblePosition*);
 void showTree(const blink::VisiblePosition&);
 #endif
 
 #endif // VisiblePosition_h