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

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

+// 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.
+
+#ifndef PaintWorkletGlobalScopeProxy_h
+#define PaintWorkletGlobalScopeProxy_h
+
+#include "core/workers/WorkletGlobalScopeProxy.h"
+
+#include "modules/ModulesExport.h"
+#include "modules/csspaint/PaintWorkletGlobalScope.h"
+
+namespace blink {
+
+class LocalFrame;
+class WorkletObjectProxy;
+
+class MODULES_EXPORT PaintWorkletGlobalScopeProxy
+    : public WorkletGlobalScopeProxy {
+ public:
+  static std::unique_ptr<PaintWorkletGlobalScopeProxy> Create(
+      LocalFrame*,
+      WorkletObjectProxy*);
+  static PaintWorkletGlobalScopeProxy* From(WorkletGlobalScopeProxy*);
+
+  virtual ~PaintWorkletGlobalScopeProxy() = default;
+
+  // Implements WorkletGlobalScopeProxy.
+  void FetchAndInvokeScript(int32_t request_id,
+                            const KURL& script_url) override;
+  void EvaluateScript(const ScriptSourceCode&) override;
+  void TerminateWorkletGlobalScope() override;
+
+  PaintWorkletGlobalScope* global_scope() const { return global_scope_.Get(); }
+
+ private:
+  PaintWorkletGlobalScopeProxy(LocalFrame*, WorkletObjectProxy*);
+
+  Persistent<PaintWorkletGlobalScope> global_scope_;
+};
+
+}  // namespace blink
+
+#endif  // PaintWorkletGlobalScopeProxy_h