Fix virtual/override/final usage in Source/platform/.

Source/platform/audio/AudioDSPKernelProcessor.h

Index: Source/platform/audio/AudioDSPKernelProcessor.h
diff --git a/Source/platform/audio/AudioDSPKernelProcessor.h b/Source/platform/audio/AudioDSPKernelProcessor.h
index 89277e31b779ee2412471bffaef78a885358b971..ac02a9c09cadc6909be08f7d033a8e490cc6ee1a 100644
--- a/Source/platform/audio/AudioDSPKernelProcessor.h
+++ b/Source/platform/audio/AudioDSPKernelProcessor.h
@@ -58,15 +58,15 @@ public:
     virtual PassOwnPtr<AudioDSPKernel> createKernel() = 0;
 
     // AudioProcessor methods
-    virtual void initialize() override;
-    virtual void uninitialize() override;
-    virtual void process(const AudioBus* source, AudioBus* destination, size_t framesToProcess) override;
-    virtual void reset() override;
-    virtual void setNumberOfChannels(unsigned) override;
-    virtual unsigned numberOfChannels() const override { return m_numberOfChannels; }
+    void initialize() override;
+    void uninitialize() override;
+    void process(const AudioBus* source, AudioBus* destination, size_t framesToProcess) override;
+    void reset() override;
+    void setNumberOfChannels(unsigned) override;
+    unsigned numberOfChannels() const override { return m_numberOfChannels; }
 
-    virtual double tailTime() const override;
-    virtual double latencyTime() const override;
+    double tailTime() const override;
+    double latencyTime() const override;
 
 protected:
     Vector<OwnPtr<AudioDSPKernel>> m_kernels;