Update modules classes to use OVERRIDE / FINAL when needed

Source/modules/webaudio/BiquadDSPKernel.h

Index: Source/modules/webaudio/BiquadDSPKernel.h
diff --git a/Source/modules/webaudio/BiquadDSPKernel.h b/Source/modules/webaudio/BiquadDSPKernel.h
index c2e8ac8cbb54ea7b8160e2e949e50bbd1f4fbb50..528a8ea7ccac7db168d640f6843de94271529e1d 100644
--- a/Source/modules/webaudio/BiquadDSPKernel.h
+++ b/Source/modules/webaudio/BiquadDSPKernel.h
@@ -35,7 +35,7 @@ class BiquadProcessor;
 
 // BiquadDSPKernel is an AudioDSPKernel and is responsible for filtering one channel of a BiquadProcessor using a Biquad object.
 
-class BiquadDSPKernel : public AudioDSPKernel {
+class BiquadDSPKernel FINAL : public AudioDSPKernel {
 public:
     explicit BiquadDSPKernel(BiquadProcessor* processor)
     : AudioDSPKernel(processor)
@@ -43,8 +43,8 @@ public:
     }
 
     // AudioDSPKernel
-    virtual void process(const float* source, float* dest, size_t framesToProcess);
-    virtual void reset() { m_biquad.reset(); }
+    virtual void process(const float* source, float* dest, size_t framesToProcess) OVERRIDE;
+    virtual void reset() OVERRIDE { m_biquad.reset(); }
 
     // Get the magnitude and phase response of the filter at the given
     // set of frequencies (in Hz). The phase response is in radians.