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..0401d387683d3ec6add665bb0e3fc7a0ad1d28ba 100644
--- a/third_party/WebKit/Source/core/workers/MainThreadWorkletGlobalScope.h
+++ b/third_party/WebKit/Source/core/workers/MainThreadWorkletGlobalScope.h
@@ -10,6 +10,7 @@
 #include "core/dom/ExecutionContext.h"
 #include "core/workers/WorkletGlobalScope.h"
 #include "core/workers/WorkletPendingTasks.h"
+#include "platform/WebTaskRunner.h"
 #include "public/platform/WebURLRequest.h"
 
 namespace blink {
@@ -36,9 +37,16 @@ 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 |outside_settings_task_runner| (i.e., the
+  // parent frame's task runner).
   void FetchAndInvokeScript(const KURL& module_url_record,
                             WebURLRequest::FetchCredentialsMode,
+                            RefPtr<WebTaskRunner> outside_settings_task_runner,
                             WorkletPendingTasks*);
+
   void Terminate();
 
   // ExecutionContext