Introduce PaintWorkletGlobalScope, rename renderWorklet attribute to paintWorklet.

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/mediastream/RTCPeerConnectionErrorCallback.h b/third_party/WebKit/Source/modules/csspaint/PaintWorklet.h
similarity index 31%
copy from third_party/WebKit/Source/modules/mediastream/RTCPeerConnectionErrorCallback.h
copy to third_party/WebKit/Source/modules/csspaint/PaintWorklet.h
index 59299c215cd6ad6a8dd5b7a057f262890ce65dac..1bf6a6962fcebf37c282efbb62dc46efd860365f 100644
--- a/third_party/WebKit/Source/modules/mediastream/RTCPeerConnectionErrorCallback.h
+++ b/third_party/WebKit/Source/modules/csspaint/PaintWorklet.h
@@ -2,23 +2,30 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef RTCPeerConnectionErrorCallback_h
-#define RTCPeerConnectionErrorCallback_h
+#ifndef PaintWorklet_h
+#define PaintWorklet_h
 
+#include "modules/worklet/Worklet.h"
 #include "platform/heap/Handle.h"
 
 namespace blink {
 
-class ExecutionContext;
-class DOMException;
-
-class RTCPeerConnectionErrorCallback : public GarbageCollectedFinalized<RTCPeerConnectionErrorCallback> {
+class PaintWorklet final : public Worklet {
+    WTF_MAKE_NONCOPYABLE(PaintWorklet);
 public:
-    virtual ~RTCPeerConnectionErrorCallback() {}
-    virtual void handleEvent(DOMException*) = 0;
-    DEFINE_INLINE_VIRTUAL_TRACE() { }
+    static PaintWorklet* create(LocalFrame*, ExecutionContext*);
+    ~PaintWorklet() override;
+
+    WorkletGlobalScope* workletGlobalScope() const final { return m_paintWorkletGlobalScope.get(); }
+
+    DECLARE_VIRTUAL_TRACE();
+
+private:
+    PaintWorklet(LocalFrame*, ExecutionContext*);
+
+    RefPtrWillBeMember<WorkletGlobalScope> m_paintWorkletGlobalScope;
 };
 
 } // namespace blink
 
-#endif // RTCPeerConnectionErrorCallback_h
+#endif // PaintWorklet_h