Add explicit destructors to DOM classes containing smart pointers to incomplete types

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 56128cfe9ae2a7959bb725d60b95f287275e9def..6a62da1bf218f6c3fa2212006cd4a7c0811b2aa8 100644
--- a/Source/platform/audio/AudioDSPKernelProcessor.h
+++ b/Source/platform/audio/AudioDSPKernelProcessor.h
@@ -52,6 +52,7 @@ class PLATFORM_EXPORT AudioDSPKernelProcessor : public AudioProcessor {
 public:
     // numberOfChannels may be later changed if object is not yet in an "initialized" state
     AudioDSPKernelProcessor(float sampleRate, unsigned numberOfChannels);
+    virtual ~AudioDSPKernelProcessor();
 
     // Subclasses create the appropriate type of processing kernel here.
     // We'll call this to create a kernel for each channel.