Improving direction-based selection strategy.

Source/core/editing/VisibleUnits.h

Index: Source/core/editing/VisibleUnits.h
diff --git a/Source/core/editing/VisibleUnits.h b/Source/core/editing/VisibleUnits.h
index 8362147b7c34cda3cf0976f21314db5c83350bd4..30da9f939425defdc7990c7958550f733fe4c51a 100644
--- a/Source/core/editing/VisibleUnits.h
+++ b/Source/core/editing/VisibleUnits.h
@@ -38,6 +38,8 @@ class PositionWithAffinity;
 class LayoutObject;
 class Node;
 class VisiblePosition;
+class IntPoint;
+class LocalFrame;
 
 enum EWordSide { RightWordIfOnBoundary = false, LeftWordIfOnBoundary = true };
 
@@ -102,6 +104,10 @@ bool isEndOfEditableOrNonEditableContent(const VisiblePosition&);
 // Rect is local to the returned renderer
 LayoutRect localCaretRectOfPosition(const PositionWithAffinity&, LayoutObject*&);
 
+// Returns a hit-tested VisiblePosition for the given point in contents-space
+// coordinates.
+VisiblePosition visiblePositionForContentsPoint(const IntPoint&, LocalFrame*);
+
 } // namespace blink
 
 #endif // VisibleUnits_h