Fix virtual/override/final usage in Source/core/editing/.

Source/core/editing/InsertParagraphSeparatorCommand.h

Index: Source/core/editing/InsertParagraphSeparatorCommand.h
diff --git a/Source/core/editing/InsertParagraphSeparatorCommand.h b/Source/core/editing/InsertParagraphSeparatorCommand.h
index e72d0c002d938e7d2f3d42f575bef2af2b43d14a..1e34a14bdf05d42bc0844d22b8ee40a88c4ddc7a 100644
--- a/Source/core/editing/InsertParagraphSeparatorCommand.h
+++ b/Source/core/editing/InsertParagraphSeparatorCommand.h
@@ -44,7 +44,7 @@ public:
 private:
     InsertParagraphSeparatorCommand(Document&, bool useDefaultParagraphElement, bool pasteBlockquoteIntoUnquotedArea);
 
-    virtual void doApply() override;
+    void doApply() override;
 
     void calculateStyleBeforeInsertion(const Position&);
     void applyStyleAfterInsertion(Element* originalEnclosingBlock);
@@ -53,7 +53,7 @@ private:
 
     bool shouldUseDefaultParagraphElement(Element*) const;
 
-    virtual bool preservesTypingStyle() const override;
+    bool preservesTypingStyle() const override;
 
     RefPtrWillBeMember<EditingStyle> m_style;