Introduce PaintWorkletGlobalScope, rename renderWorklet attribute to paintWorklet.

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

+// 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.
+
+#include "modules/csspaint/PaintWorklet.h"
+
+#include "bindings/core/v8/V8Binding.h"
+#include "core/dom/ExecutionContext.h"
+#include "modules/csspaint/PaintWorkletGlobalScope.h"
+
+namespace blink {
+
+// static
+PaintWorklet* PaintWorklet::create(LocalFrame* frame, ExecutionContext* executionContext)
+{
+    PaintWorklet* worklet = new PaintWorklet(frame, executionContext);
+    worklet->suspendIfNeeded();
+    return worklet;
+}
+
+PaintWorklet::PaintWorklet(LocalFrame* frame, ExecutionContext* executionContext)
+    : Worklet(executionContext)
+    , m_paintWorkletGlobalScope(PaintWorkletGlobalScope::create(frame, executionContext->url(), executionContext->userAgent(), executionContext->getSecurityOrigin(), toIsolate(executionContext)))
+{
+}
+
+PaintWorklet::~PaintWorklet()
+{
+}
+
+DEFINE_TRACE(PaintWorklet)
+{
+    visitor->trace(m_paintWorkletGlobalScope);
+    Worklet::trace(visitor);
+}
+
+} // namespace blink