Use wrapper tracing for worklets.

third_party/WebKit/Source/modules/csspaint/PaintWorkletGlobalScope.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 PaintWorkletGlobalScope_h
 #define PaintWorkletGlobalScope_h
 
 #include "bindings/core/v8/ScriptValue.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/workers/MainThreadWorkletGlobalScope.h"
 #include "modules/ModulesExport.h"
 #include "modules/csspaint/PaintWorkletPendingGeneratorRegistry.h"
+#include "platform/bindings/ScriptWrappable.h"
 #include "platform/graphics/ImageBuffer.h"
 
 namespace blink {
 
 class CSSPaintDefinition;
 class ExceptionState;
 
 class MODULES_EXPORT PaintWorkletGlobalScope final
     : public MainThreadWorkletGlobalScope {
   DEFINE_WRAPPERTYPEINFO();
@@ skipping 10 matching lines @@
   void Dispose() final;
 
   bool IsPaintWorkletGlobalScope() const final { return true; }
   void registerPaint(const String& name,
                      const ScriptValue& ctor,
                      ExceptionState&);
 
   CSSPaintDefinition* FindDefinition(const String& name);
 
   DECLARE_VIRTUAL_TRACE();
+  DECLARE_TRACE_WRAPPERS();
 
  private:
   PaintWorkletGlobalScope(LocalFrame*,
                           const KURL&,
                           const String& user_agent,
                           PassRefPtr<SecurityOrigin>,
                           v8::Isolate*,
                           PaintWorkletPendingGeneratorRegistry*);
 
   // The implementation of the "paint definition" concept:
   // https://drafts.css-houdini.org/css-paint-api/#paint-definition
-  typedef HeapHashMap<String, Member<CSSPaintDefinition>> DefinitionMap;
+  typedef HeapHashMap<String, TraceWrapperMember<CSSPaintDefinition>>
+      DefinitionMap;
   DefinitionMap paint_definitions_;
 
   Member<PaintWorkletPendingGeneratorRegistry> pending_generator_registry_;
 };
 
 DEFINE_TYPE_CASTS(PaintWorkletGlobalScope,
                   ExecutionContext,
                   context,
                   context->IsPaintWorkletGlobalScope(),
                   context.IsPaintWorkletGlobalScope());
 
 }  // namespace blink
 
 #endif  // PaintWorkletGlobalScope_h