Update modules classes to use OVERRIDE / FINAL when needed

Source/modules/webaudio/AudioProcessingEvent.h

Index: Source/modules/webaudio/AudioProcessingEvent.h
diff --git a/Source/modules/webaudio/AudioProcessingEvent.h b/Source/modules/webaudio/AudioProcessingEvent.h
index de2d78332f5e7cddac0d1a4794f7667e4a23d732..0f83f3eb928dd1eb1ab3f1ff39b2af98a814455e 100644
--- a/Source/modules/webaudio/AudioProcessingEvent.h
+++ b/Source/modules/webaudio/AudioProcessingEvent.h
@@ -34,7 +34,7 @@ namespace WebCore {
 
 class AudioBuffer;
 
-class AudioProcessingEvent : public Event {
+class AudioProcessingEvent FINAL : public Event {
 public:
     static PassRefPtr<AudioProcessingEvent> create();
     static PassRefPtr<AudioProcessingEvent> create(PassRefPtr<AudioBuffer> inputBuffer, PassRefPtr<AudioBuffer> outputBuffer);
@@ -44,7 +44,7 @@ public:
     AudioBuffer* inputBuffer() { return m_inputBuffer.get(); }
     AudioBuffer* outputBuffer() { return m_outputBuffer.get(); }
 
-    virtual const AtomicString& interfaceName() const;
+    virtual const AtomicString& interfaceName() const OVERRIDE;
 
 private:
     AudioProcessingEvent();