[ES6 modules] Make ModuleMap TraceWrapperBase

third_party/WebKit/Source/core/dom/ModuleScript.h

Index: third_party/WebKit/Source/core/dom/ModuleScript.h
diff --git a/third_party/WebKit/Source/core/dom/ModuleScript.h b/third_party/WebKit/Source/core/dom/ModuleScript.h
index 5efe745b3db767df8531fd460c6ba0047e8e33c9..1b5329d87594cdeb4ac3afb890e0454c9fdf8907 100644
--- a/third_party/WebKit/Source/core/dom/ModuleScript.h
+++ b/third_party/WebKit/Source/core/dom/ModuleScript.h
@@ -6,6 +6,7 @@
 #define ModuleScript_h
 
 #include "bindings/core/v8/ScriptModule.h"
+#include "bindings/core/v8/ScriptWrappable.h"
 #include "core/CoreExport.h"
 #include "platform/heap/Handle.h"
 #include "platform/loader/fetch/ResourceLoaderOptions.h"
@@ -24,7 +25,8 @@ enum class ModuleInstantiationState {
 // ModuleScript is a model object for the "module script" spec concept.
 // https://html.spec.whatwg.org/multipage/webappapis.html#module-script
 class CORE_EXPORT ModuleScript final
-    : public GarbageCollectedFinalized<ModuleScript> {
+    : public GarbageCollectedFinalized<ModuleScript>,
+      public TraceWrapperBase {
  public:
   static ModuleScript* create(
       ScriptModule record,