Make nextLinePosition() not to use Position::deprecatedEditingOffset()

Source/core/editing/VisibleUnits.cpp

Index: Source/core/editing/VisibleUnits.cpp
diff --git a/Source/core/editing/VisibleUnits.cpp b/Source/core/editing/VisibleUnits.cpp
index 4c03e8fab0de25c63ecc2e239e140271133931ed..3df0929eb37a6e181c2e30bd6736d51c9cdc431a 100644
--- a/Source/core/editing/VisibleUnits.cpp
+++ b/Source/core/editing/VisibleUnits.cpp
@@ -1036,7 +1036,7 @@ VisiblePosition nextLinePosition(const VisiblePosition &visiblePosition, LayoutU
 
     if (!root) {
         // FIXME: We need do the same in previousLinePosition.
-        Node* child = NodeTraversal::childAt(*node, p.deprecatedEditingOffset());
+        Node* child = NodeTraversal::childAt(*node, p.computeEditingOffset());
         node = child ? child : &NodeTraversal::lastWithinOrSelf(*node);
         Position position = nextRootInlineBoxCandidatePosition(node, visiblePosition, editableType);
         if (position.isNotNull()) {