Ignore visibility when checking whether Position is editable or not at DeletetSelectionCommand

Source/core/editing/VisiblePosition.cpp

Index: Source/core/editing/VisiblePosition.cpp
diff --git a/Source/core/editing/VisiblePosition.cpp b/Source/core/editing/VisiblePosition.cpp
index 0c785f74203fd360478866971a65c9f6ac603a45..00f1937c90bbf8297962b5caae2056cf7b562864 100644
--- a/Source/core/editing/VisiblePosition.cpp
+++ b/Source/core/editing/VisiblePosition.cpp
@@ -475,7 +475,7 @@ VisiblePosition VisiblePosition::honorEditingBoundaryAtOrBefore(const VisiblePos
         return VisiblePosition();
 
     // Return the last position before pos that is in the same editable region as this position
-    return lastEditablePositionBeforePositionInRoot(pos.deepEquivalent(), highestRoot);
+    return VisiblePosition(lastEditablePositionBeforePositionInRoot(pos.deepEquivalent(), highestRoot));
 }
 
 VisiblePosition VisiblePosition::honorEditingBoundaryAtOrAfter(const VisiblePosition &pos) const
@@ -521,7 +521,7 @@ VisiblePosition VisiblePosition::skipToStartOfEditingBoundary(const VisiblePosit
         return VisiblePosition(previousVisuallyDistinctCandidate(Position(highestRootOfPos, Position::PositionIsBeforeAnchor).parentAnchoredEquivalent()));
 
     // That must mean that |pos| is not editable. Return the last position before pos that is in the same editable region as this position
-    return lastEditablePositionBeforePositionInRoot(pos.deepEquivalent(), highestRoot);
+    return VisiblePosition(lastEditablePositionBeforePositionInRoot(pos.deepEquivalent(), highestRoot));
 }
 
 VisiblePosition VisiblePosition::skipToEndOfEditingBoundary(const VisiblePosition &pos) const