ALL-IN-ONE Introduce enum class TextAffinity

Source/core/editing/commands/DeleteSelectionCommand.cpp

Index: Source/core/editing/commands/DeleteSelectionCommand.cpp
diff --git a/Source/core/editing/commands/DeleteSelectionCommand.cpp b/Source/core/editing/commands/DeleteSelectionCommand.cpp
index 7e8c4900e4fc81b7dfe74ec890cd91d51231f5b5..396bd93130980c8d18b822dbacf71cf789dea8e0 100644
--- a/Source/core/editing/commands/DeleteSelectionCommand.cpp
+++ b/Source/core/editing/commands/DeleteSelectionCommand.cpp
@@ -792,7 +792,7 @@ void DeleteSelectionCommand::doApply()
         return;
 
     // save this to later make the selection with
-    EAffinity affinity = m_selectionToDelete.affinity();
+    TextAffinity affinity = m_selectionToDelete.affinity();
 
     Position downstreamEnd = m_selectionToDelete.end().downstream();
     bool rootWillStayOpenWithoutPlaceholder = downstreamEnd.computeContainerNode() == downstreamEnd.computeContainerNode()->rootEditableElement()