Early return if SelectionInDOMTree is None at LayoutSelection::CalcSelectionPaintRange.

third_party/WebKit/Source/core/editing/LayoutSelection.cpp

Index: third_party/WebKit/Source/core/editing/LayoutSelection.cpp
diff --git a/third_party/WebKit/Source/core/editing/LayoutSelection.cpp b/third_party/WebKit/Source/core/editing/LayoutSelection.cpp
index 3beb0274d57c55771ddea0e7a79747ee84b50166..6791a46b05dc91a2a0745b149e667e521505bad5 100644
--- a/third_party/WebKit/Source/core/editing/LayoutSelection.cpp
+++ b/third_party/WebKit/Source/core/editing/LayoutSelection.cpp
@@ -318,6 +318,11 @@ void LayoutSelection::ClearSelection() {
 
 static SelectionPaintRange CalcSelectionPaintRange(
     const FrameSelection& frame_selection) {
+  const SelectionInDOMTree& selection_in_dom =
+      frame_selection.GetSelectionInDOMTree();
+  if (selection_in_dom.IsNone())
+    return SelectionPaintRange();
+
   const VisibleSelectionInFlatTree& original_selection =
       frame_selection.ComputeVisibleSelectionInFlatTree();
   // Construct a new VisibleSolution, since visibleSelection() is not