Use wrapper tracing for worklets.

third_party/WebKit/Source/modules/webaudio/AudioWorkletGlobalScope.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef AudioWorkletGlobalScope_h
 #define AudioWorkletGlobalScope_h
 
 #include "bindings/core/v8/ScriptValue.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/workers/ThreadedWorkletGlobalScope.h"
 #include "modules/ModulesExport.h"
+#include "platform/bindings/ScriptWrappable.h"
 
 namespace blink {
 
 class AudioBuffer;
 class AudioWorkletProcessor;
 class AudioWorkletProcessorDefinition;
 class ExceptionState;
 
 // This is constructed and destroyed on a worker thread, and all methods also
 // must be called on the worker thread.
 class MODULES_EXPORT AudioWorkletGlobalScope final
     : public ThreadedWorkletGlobalScope {
   DEFINE_WRAPPERTYPEINFO();
 
  public:
   static AudioWorkletGlobalScope* Create(const KURL&,
                                          const String& user_agent,
                                          PassRefPtr<SecurityOrigin>,
                                          v8::Isolate*,
                                          WorkerThread*);
   ~AudioWorkletGlobalScope() override;
-  void Dispose() final;
   bool IsAudioWorkletGlobalScope() const final { return true; }
   void registerProcessor(const String& name,
                          const ScriptValue& class_definition,
                          ExceptionState&);
 
   // Creates an instance of AudioWorkletProcessor from a registered name. This
   // function may return nullptr when 1) a definition cannot be found or 2) a
   // new V8 object cannot be constructed for some reason.
   AudioWorkletProcessor* CreateInstance(const String& name);
 
   // Invokes the JS audio processing function from an instance of
   // AudioWorkletProcessor, along with given AudioBuffer from the audio graph.
   bool Process(AudioWorkletProcessor*,
                AudioBuffer* input_buffer,
                AudioBuffer* output_buffer);
 
   AudioWorkletProcessorDefinition* FindDefinition(const String& name);
 
   DECLARE_TRACE();
+  DECLARE_TRACE_WRAPPERS();
 
  private:
   AudioWorkletGlobalScope(const KURL&,
                           const String& user_agent,
                           PassRefPtr<SecurityOrigin>,
                           v8::Isolate*,
                           WorkerThread*);
 
-  typedef HeapHashMap<String, Member<AudioWorkletProcessorDefinition>>
+  typedef HeapHashMap<String,
+                      TraceWrapperMember<AudioWorkletProcessorDefinition>>
       ProcessorDefinitionMap;
-  typedef HeapVector<Member<AudioWorkletProcessor>> ProcessorInstances;
+  typedef HeapVector<TraceWrapperMember<AudioWorkletProcessor>>
+      ProcessorInstances;
 
   ProcessorDefinitionMap processor_definition_map_;
   ProcessorInstances processor_instances_;
 };
 
 }  // namespace blink
 
 #endif  // AudioWorkletGlobalScope_h