Use wrapper tracing for worklets.

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

 // Copyright 2017 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 AudioWorkletProcessorDefinition_h
 #define AudioWorkletProcessorDefinition_h
 
 #include "modules/ModulesExport.h"
-#include "platform/bindings/ScopedPersistent.h"
+#include "platform/bindings/ScriptWrappable.h"
+#include "platform/bindings/TraceWrapperV8Reference.h"
 #include "platform/heap/Handle.h"
 #include "platform/wtf/text/WTFString.h"
 #include "v8/include/v8.h"
 
 namespace blink {
 
 // Represents a JavaScript class definition registered in the
 // AudioWorkletGlobalScope. After the registration, a definition class contains
 // the V8 representation of class components (constructor, process callback,
 // prototypes and parameter descriptors).
 //
 // This is constructed and destroyed on a worker thread, and all methods also
 // must be called on the worker thread.
 class MODULES_EXPORT AudioWorkletProcessorDefinition final
-    : public GarbageCollectedFinalized<AudioWorkletProcessorDefinition> {
+    : public GarbageCollectedFinalized<AudioWorkletProcessorDefinition>,
+      public TraceWrapperBase {
  public:
   static AudioWorkletProcessorDefinition* Create(
       v8::Isolate*,
       const String& name,
       v8::Local<v8::Function> constructor,
       v8::Local<v8::Function> process);
 
   virtual ~AudioWorkletProcessorDefinition();
 
   const String& GetName() const { return name_; }
   v8::Local<v8::Function> ConstructorLocal(v8::Isolate*);
   v8::Local<v8::Function> ProcessLocal(v8::Isolate*);
 
   DEFINE_INLINE_TRACE(){};
+  DECLARE_TRACE_WRAPPERS();
 
  private:
   AudioWorkletProcessorDefinition(v8::Isolate*,
                                   const String& name,
                                   v8::Local<v8::Function> constructor,
                                   v8::Local<v8::Function> process);
 
   const String name_;
 
   // The definition is per global scope. The active instance of
   // |AudioProcessorWorklet| should be passed into these to perform JS function.
-  ScopedPersistent<v8::Function> constructor_;
-  ScopedPersistent<v8::Function> process_;
+  TraceWrapperV8Reference<v8::Function> constructor_;
+  TraceWrapperV8Reference<v8::Function> process_;
 
   // TODO(hongchan): A container for AudioParamDescriptor objects.
   // ScopedPersistent<v8::Array> m_parameterDescriptors;
 };
 
 }  // namespace blink
 
 #endif  // AudioWorkletProcessorDefinition_h