Worklet: Enqueue tasks into outsideSetting's event loop

third_party/WebKit/Source/core/workers/MainThreadWorkletGlobalScope.h

Index: third_party/WebKit/Source/core/workers/MainThreadWorkletGlobalScope.h
diff --git a/third_party/WebKit/Source/core/workers/MainThreadWorkletGlobalScope.h b/third_party/WebKit/Source/core/workers/MainThreadWorkletGlobalScope.h
index 7c5ffaebbb1115510e628b739ce2b487e68e11cf..7d1658a11b6e8ede524264f63fa5747f4cd0ab27 100644
--- a/third_party/WebKit/Source/core/workers/MainThreadWorkletGlobalScope.h
+++ b/third_party/WebKit/Source/core/workers/MainThreadWorkletGlobalScope.h
@@ -16,6 +16,7 @@ namespace blink {
 
 class ConsoleMessage;
 class LocalFrame;
+class ParentFrameTaskRunners;
 
 class CORE_EXPORT MainThreadWorkletGlobalScope
     : public WorkletGlobalScope,
@@ -36,9 +37,15 @@ class CORE_EXPORT MainThreadWorkletGlobalScope
   void ReportDeprecation(UseCounter::Feature) override;
   WorkerThread* GetThread() const final;
 
+  // Implementation of the "fetch and invoke a worklet script" algorithm:
+  // https://drafts.css-houdini.org/worklets/#fetch-and-invoke-a-worklet-script
+  // When script evaluation is done or any exception happens, it's notified to
+  // the given WorkletPendingTasks via the parent frame task runners.
   void FetchAndInvokeScript(const KURL& module_url_record,
                             WebURLRequest::FetchCredentialsMode,
+                            ParentFrameTaskRunners*,
                             WorkletPendingTasks*);
+
   void Terminate();
 
   // ExecutionContext