Revert "Pull AudioDestinationConsumer off the Blink GC heap."

third_party/WebKit/Source/platform/audio/AudioDestinationConsumer.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef AudioDestinationConsumer_h
 #define AudioDestinationConsumer_h
 
-#include <memory>
 #include "platform/PlatformExport.h"
+#include "platform/heap/Handle.h"
 
 namespace blink {
 
 class AudioBus;
 
-class PLATFORM_EXPORT AudioDestinationConsumer {
+class PLATFORM_EXPORT AudioDestinationConsumer
+    : public GarbageCollected<AudioDestinationConsumer> {
  public:
   virtual void setFormat(size_t numberOfChannels, float sampleRate) = 0;
   virtual void consumeAudio(AudioBus*, size_t numberOfFrames) = 0;
+
+  DEFINE_INLINE_VIRTUAL_TRACE() {}
 };
 
 }  // namespace blink
 
 #endif  // AudioDestinationConsumer_h