Get rid of createVisibleSelection() taking one Position

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

 /*
  * Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 327 matching lines @@
   Position originalSelectionEnd = endingSelection().end();
   Position endAfterSelection =
       endOfParagraph(nextPositionOf(endOfLastParagraph)).deepEquivalent();
 
   while (endOfCurrentParagraph.deepEquivalent() != endAfterSelection) {
     PositionWithAffinity endOfNextParagraph =
         endOfParagraph(nextPositionOf(endOfCurrentParagraph))
             .toPositionWithAffinity();
     if (endOfCurrentParagraph.deepEquivalent() ==
         endOfLastParagraph.deepEquivalent()) {
-      setEndingSelection(createVisibleSelection(originalSelectionEnd,
-                                                TextAffinity::Downstream));
+      SelectionInDOMTree::Builder builder;
+      if (originalSelectionEnd.isNotNull())
+        builder.collapse(originalSelectionEnd);
+      setEndingSelection(createVisibleSelection(builder.build()));
     } else {
       setEndingSelection(endOfCurrentParagraph);
     }
 
     outdentParagraph(editingState);
     if (editingState->isAborted())
       return;
 
     // outdentParagraph could move more than one paragraph if the paragraph
     // is in a list item. As a result, endAfterSelection and endOfNextParagraph
@@ skipping 36 matching lines @@
   else
     indentIntoBlockquote(start, end, blockquoteForNextIndent, editingState);
 }
 
 InputEvent::InputType IndentOutdentCommand::inputType() const {
   return m_typeOfAction == Indent ? InputEvent::InputType::Indent
                                   : InputEvent::InputType::Outdent;
 }
 
 }  // namespace blink