Introduce lineDirectionPointForBlockDirectionNavigationOf() for VisiblePosition

Source/core/editing/VisiblePosition.h

Index: Source/core/editing/VisiblePosition.h
diff --git a/Source/core/editing/VisiblePosition.h b/Source/core/editing/VisiblePosition.h
index 405202bf5a05e75eed0d389c8184713dc6f8fe14..651d8762b6d959bdee7a19dd09ae015f0e05fac1 100644
--- a/Source/core/editing/VisiblePosition.h
+++ b/Source/core/editing/VisiblePosition.h
@@ -115,9 +115,6 @@ public:
     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();
 
@@ -138,6 +135,13 @@ private:
     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&);