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/csspaint/PaintWorklet.h b/third_party/WebKit/Source/modules/csspaint/PaintWorklet.h
new file mode 100644
index 0000000000000000000000000000000000000000..26134e357027322cbf507272114728024d55c5bc
--- /dev/null
+++ b/third_party/WebKit/Source/modules/csspaint/PaintWorklet.h
@@ -0,0 +1,32 @@
+// Copyright 2016 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 PaintWorklet_h
+#define PaintWorklet_h
+
+#include "modules/worklet/Worklet.h"
+#include "platform/heap/Handle.h"
+
+namespace blink {
+
+class PaintWorklet final : public Worklet {
+    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(PaintWorklet);

[haraken, 2016/03/22 01:52:56]

You can remove this since Worklet has WILL_BE_USING_GARBAGE_COLLECTED_MIXIN.

[ikilpatrick, 2016/03/22 20:31:51]

Done.

+    WTF_MAKE_NONCOPYABLE(PaintWorklet);
+public:
+    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 // PaintWorklet_h