Worklet: Enable module script loading for main thread worklets

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

Index: third_party/WebKit/Source/core/workers/WorkletModuleTreeClient.h
diff --git a/third_party/WebKit/Source/core/workers/WorkletModuleTreeClient.h b/third_party/WebKit/Source/core/workers/WorkletModuleTreeClient.h
new file mode 100644
index 0000000000000000000000000000000000000000..0329ee87488174059a4d1ae05bdfce2da8806c74
--- /dev/null
+++ b/third_party/WebKit/Source/core/workers/WorkletModuleTreeClient.h
@@ -0,0 +1,31 @@
+// Copyright 2017 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.
+
+#include "core/dom/Modulator.h"
+#include "core/workers/WorkletPendingTasks.h"
+#include "platform/heap/GarbageCollected.h"
+
+namespace blink {
+
+class ModuleScript;
+
+class WorkletModuleTreeClient final
+    : public GarbageCollectedFinalized<WorkletModuleTreeClient>,
+      public ModuleTreeClient {
+  USING_GARBAGE_COLLECTED_MIXIN(WorkletModuleTreeClient);
+
+ public:
+  WorkletModuleTreeClient(Modulator*, WorkletPendingTasks*);
+
+  // Implements ModuleTreeClient.
+  void NotifyModuleTreeLoadFinished(ModuleScript*) final;
+
+  DECLARE_VIRTUAL_TRACE();
+
+ private:
+  Member<Modulator> modulator_;
+  Member<WorkletPendingTasks> pending_tasks_;
+};
+
+}  // namespace blink