[DONT COMMIT] Worklet: Implement "addModule()" algorithm for main thread worklets

third_party/WebKit/Source/modules/csspaint/PaintWorklet.h

Index: third_party/WebKit/Source/modules/csspaint/PaintWorklet.h
diff --git a/third_party/WebKit/Source/modules/csspaint/PaintWorklet.h b/third_party/WebKit/Source/modules/csspaint/PaintWorklet.h
index 762df33ed9afba7e6c2dbb44f1a5c7cf9ee27a3b..dad527e66ba4ac1d7c8d457c4abbb00f93404f5e 100644
--- a/third_party/WebKit/Source/modules/csspaint/PaintWorklet.h
+++ b/third_party/WebKit/Source/modules/csspaint/PaintWorklet.h
@@ -7,7 +7,6 @@
 
 #include "core/workers/MainThreadWorklet.h"
 #include "modules/ModulesExport.h"
-#include "modules/csspaint/PaintWorkletGlobalScope.h"
 #include "platform/heap/Handle.h"
 
 namespace blink {
@@ -22,16 +21,17 @@ class MODULES_EXPORT PaintWorklet final : public MainThreadWorklet {
   static PaintWorklet* Create(LocalFrame*);
   ~PaintWorklet() override;
 
-  PaintWorkletGlobalScope* GetWorkletGlobalScopeProxy() const final;
   CSSPaintDefinition* FindDefinition(const String& name);
   void AddPendingGenerator(const String& name, CSSPaintImageGeneratorImpl*);
 
   DECLARE_VIRTUAL_TRACE();
 
  private:
+  friend class PaintWorkletTest;
+
   explicit PaintWorklet(LocalFrame*);
 
-  Member<PaintWorkletGlobalScope> paint_worklet_global_scope_;
+  void CreateWorkletGlobalScope() override;
 };
 
 }  // namespace blink