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

Source/core/html/MediaDocument.h

Index: Source/core/html/MediaDocument.h
diff --git a/Source/core/html/MediaDocument.h b/Source/core/html/MediaDocument.h
index e90e8cd157f9f5baad9509ef21b34ee960b1e01c..2aac9982ce4d62bb62928c0489a088dfd68979b5 100644
--- a/Source/core/html/MediaDocument.h
+++ b/Source/core/html/MediaDocument.h
@@ -30,7 +30,7 @@
 
 namespace blink {
 
-class MediaDocument FINAL : public HTMLDocument {
+class MediaDocument final : public HTMLDocument {
 public:
     static PassRefPtrWillBeRawPtr<MediaDocument> create(const DocumentInit& initializer = DocumentInit())
     {
@@ -40,9 +40,9 @@ public:
 private:
     MediaDocument(const DocumentInit&);
 
-    virtual PassRefPtrWillBeRawPtr<DocumentParser> createParser() OVERRIDE;
+    virtual PassRefPtrWillBeRawPtr<DocumentParser> createParser() override;
 
-    virtual void defaultEventHandler(Event*) OVERRIDE;
+    virtual void defaultEventHandler(Event*) override;
 };
 
 }