| Index: Source/modules/serviceworkers/InstallEvent.idl
 | 
| diff --git a/Source/modules/serviceworkers/InstallEvent.idl b/Source/modules/serviceworkers/InstallEvent.idl
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| index bdc33db4caeb5476fb1081ff4640b40ca99eaa5c..72f7f79e8e4507d17df06ef6f245a59799bd8153 100644
 | 
| --- a/Source/modules/serviceworkers/InstallEvent.idl
 | 
| +++ b/Source/modules/serviceworkers/InstallEvent.idl
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| @@ -32,6 +32,7 @@
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|  [
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|      RuntimeEnabled=ServiceWorker,
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|      Exposed=ServiceWorker,
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| +    TypeChecking=Interface,
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|  ] interface InstallEvent : ExtendableEvent {
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|      void replace();
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|      [CallWith=ScriptState] Promise reloadAll();
 | 
| 
 |