(CANCELED) Ensure before/after is within the editable in moveParagraphWithClones

third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.cpp

Index: third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.cpp
diff --git a/third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.cpp b/third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.cpp
index ebbb4448045ba7e261463ccc4d95b5974397afbc..602aaeb898cc2d06729abd6edb0da83cab412543 100644
--- a/third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.cpp
+++ b/third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.cpp
@@ -1417,8 +1417,10 @@ void CompositeEditCommand::moveParagraphWithClones(
   DCHECK(outerNode);
   DCHECK(blockElement);
 
-  VisiblePosition beforeParagraph = previousPositionOf(startOfParagraphToMove);
-  VisiblePosition afterParagraph = nextPositionOf(endOfParagraphToMove);
+  VisiblePosition beforeParagraph =
+      previousPositionOf(startOfParagraphToMove, CannotCrossEditingBoundary);
+  VisiblePosition afterParagraph =
+      nextPositionOf(endOfParagraphToMove, CannotCrossEditingBoundary);
 
   // We upstream() the end and downstream() the start so that we don't include
   // collapsed whitespace in the move. When we paste a fragment, spaces after