Update modules classes to use OVERRIDE / FINAL when needed

Source/modules/webaudio/OscillatorNode.h

Index: Source/modules/webaudio/OscillatorNode.h
diff --git a/Source/modules/webaudio/OscillatorNode.h b/Source/modules/webaudio/OscillatorNode.h
index a4d25390644cb3b0cc4c44f72bff37e03f4cbea6..d1cdddc4ebefd08763d56bafb946d5a43302a6fe 100644
--- a/Source/modules/webaudio/OscillatorNode.h
+++ b/Source/modules/webaudio/OscillatorNode.h
@@ -40,7 +40,7 @@ class PeriodicWave;
 
 // OscillatorNode is an audio generator of periodic waveforms.
 
-class OscillatorNode : public AudioScheduledSourceNode {
+class OscillatorNode FINAL : public AudioScheduledSourceNode {
 public:
     // The waveform type.
     // These must be defined as in the .idl file.
@@ -57,8 +57,8 @@ public:
     virtual ~OscillatorNode();
 
     // AudioNode
-    virtual void process(size_t framesToProcess);
-    virtual void reset();
+    virtual void process(size_t framesToProcess) OVERRIDE;
+    virtual void reset() OVERRIDE;
 
     String type() const;