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

Source/modules/mediasource/SourceBufferList.h

Index: Source/modules/mediasource/SourceBufferList.h
diff --git a/Source/modules/mediasource/SourceBufferList.h b/Source/modules/mediasource/SourceBufferList.h
index 1395565450c7d78541a107a04a2126b87b091fe5..3451995fa977350d2727289cad6d70ba65a1b4d2 100644
--- a/Source/modules/mediasource/SourceBufferList.h
+++ b/Source/modules/mediasource/SourceBufferList.h
@@ -40,7 +40,7 @@ namespace blink {
 class SourceBuffer;
 class GenericEventQueue;
 
-class SourceBufferList FINAL : public RefCountedGarbageCollectedWillBeGarbageCollectedFinalized<SourceBufferList>, public EventTargetWithInlineData {
+class SourceBufferList final : public RefCountedGarbageCollectedWillBeGarbageCollectedFinalized<SourceBufferList>, public EventTargetWithInlineData {
     DEFINE_EVENT_TARGET_REFCOUNTING_WILL_BE_REMOVED(RefCountedGarbageCollected<SourceBufferList>);
     DEFINE_WRAPPERTYPEINFO();
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(SourceBufferList);
@@ -62,10 +62,10 @@ public:
     void clear();
 
     // EventTarget interface
-    virtual const AtomicString& interfaceName() const OVERRIDE;
-    virtual ExecutionContext* executionContext() const OVERRIDE;
+    virtual const AtomicString& interfaceName() const override;
+    virtual ExecutionContext* executionContext() const override;
 
-    virtual void trace(Visitor*) OVERRIDE;
+    virtual void trace(Visitor*) override;
 
 private:
     SourceBufferList(ExecutionContext*, GenericEventQueue*);