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

Source/modules/encryptedmedia/MediaKeysController.h

Index: Source/modules/encryptedmedia/MediaKeysController.h
diff --git a/Source/modules/encryptedmedia/MediaKeysController.h b/Source/modules/encryptedmedia/MediaKeysController.h
index e733554b764c9f9076688dd2c20a5e35852fc736..028355eb066f41a82df3940f3db847d0a4519eb3 100644
--- a/Source/modules/encryptedmedia/MediaKeysController.h
+++ b/Source/modules/encryptedmedia/MediaKeysController.h
@@ -14,7 +14,7 @@ class ExecutionContext;
 class MediaKeysClient;
 class WebContentDecryptionModule;
 
-class MediaKeysController FINAL : public NoBaseWillBeGarbageCollected<MediaKeysController>, public WillBeHeapSupplement<Page> {
+class MediaKeysController final : public NoBaseWillBeGarbageCollected<MediaKeysController>, public WillBeHeapSupplement<Page> {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(MediaKeysController);
 public:
     PassOwnPtr<WebContentDecryptionModule> createContentDecryptionModule(ExecutionContext*, const String& keySystem);
@@ -22,7 +22,7 @@ public:
     static void provideMediaKeysTo(Page&, MediaKeysClient*);
     static MediaKeysController* from(Page* page) { return static_cast<MediaKeysController*>(WillBeHeapSupplement<Page>::from(page, supplementName())); }
 
-    virtual void trace(Visitor* visitor) OVERRIDE { WillBeHeapSupplement<Page>::trace(visitor); }
+    virtual void trace(Visitor* visitor) override { WillBeHeapSupplement<Page>::trace(visitor); }
 
 private:
     explicit MediaKeysController(MediaKeysClient*);