Replace FINAL and OVERRIDE with their C++11 counterparts in Source/core/editing

Source/core/editing/InsertTextCommand.h

Index: Source/core/editing/InsertTextCommand.h
diff --git a/Source/core/editing/InsertTextCommand.h b/Source/core/editing/InsertTextCommand.h
index d92e6c6a6964e80fc8d2a6340ae568fba5c0cfa4..4eccb7571c3244f683fb791eb7e62703558b8507 100644
--- a/Source/core/editing/InsertTextCommand.h
+++ b/Source/core/editing/InsertTextCommand.h
@@ -30,7 +30,7 @@
 
 namespace blink {
 
-class InsertTextCommand FINAL : public CompositeEditCommand {
+class InsertTextCommand final : public CompositeEditCommand {
 public:
     enum RebalanceType {
         RebalanceLeadingAndTrailingWhitespaces,
@@ -46,7 +46,7 @@ public:
 private:
     InsertTextCommand(Document&, const String& text, bool selectInsertedText, RebalanceType);
 
-    virtual void doApply() OVERRIDE;
+    virtual void doApply() override;
 
     Position positionInsideTextNode(const Position&);
     Position insertTab(const Position&);