Update editing classes to use OVERRIDE / FINAL when needed

Source/core/editing/RemoveFormatCommand.h

Index: Source/core/editing/RemoveFormatCommand.h
diff --git a/Source/core/editing/RemoveFormatCommand.h b/Source/core/editing/RemoveFormatCommand.h
index f6d030d9187e407ee8b6836e2b1c8fba213c51bb..f08a5a7ce58da7df01c9c3428fd1989b0bfef36e 100644
--- a/Source/core/editing/RemoveFormatCommand.h
+++ b/Source/core/editing/RemoveFormatCommand.h
@@ -30,7 +30,7 @@
 
 namespace WebCore {
 
-class RemoveFormatCommand : public CompositeEditCommand {
+class RemoveFormatCommand FINAL : public CompositeEditCommand {
 public:
     static PassRefPtr<RemoveFormatCommand> create(Document& document)
     {
@@ -40,8 +40,8 @@ public:
 private:
     explicit RemoveFormatCommand(Document&);
 
-    virtual void doApply();
-    virtual EditAction editingAction() const { return EditActionUnspecified; }
+    virtual void doApply() OVERRIDE;
+    virtual EditAction editingAction() const OVERRIDE { return EditActionUnspecified; }
 };
 
 } // namespace WebCore