Refactor Worklet class to use ScriptResource

third_party/WebKit/Source/modules/worklet/WorkletScriptLoader.cpp

Index: third_party/WebKit/Source/modules/worklet/WorkletScriptLoader.cpp
diff --git a/third_party/WebKit/Source/modules/worklet/WorkletScriptLoader.cpp b/third_party/WebKit/Source/modules/worklet/WorkletScriptLoader.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..7db4b8fbefd3dfd6db0b6c6584e6cc0d51363f2e
--- /dev/null
+++ b/third_party/WebKit/Source/modules/worklet/WorkletScriptLoader.cpp
@@ -0,0 +1,50 @@
+// 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/worklet/WorkletScriptLoader.h"
+
+#include "core/dom/DOMException.h"
+#include "core/dom/ExceptionCode.h"
+#include "core/fetch/ResourceLoader.h"
+#include "modules/worklet/Worklet.h"
+
+namespace blink {
+
+WorkletScriptLoader::WorkletScriptLoader(ScriptPromiseResolver* resolver, Worklet* worklet, ScriptResource* resource)
+    : m_resolver(resolver)
+    , m_host(worklet)
+{
+    setResource(resource);
+}
+
+void WorkletScriptLoader::cancel()
+{
+    if (resource()) {
+        resource()->loader()->cancel();
+        clearResource();
+    }
+}
+
+void WorkletScriptLoader::notifyFinished(Resource* resource)
+{
+    DCHECK(this->resource() == resource);
+
+    m_host->notifyFinished(this);
+    if (resource->errorOccurred()) {
+        m_resolver->reject(DOMException::create(NetworkError));
+    } else {
+        DCHECK(resource->isLoaded());
+        m_resolver->resolve();
+    }
+    clearResource();
+}
+
+DEFINE_TRACE(WorkletScriptLoader)
+{
+    visitor->trace(m_resolver);
+    visitor->trace(m_host);
+    ResourceOwner<ScriptResource, ScriptResourceClient>::trace(visitor);
+}
+
+} // namespace blink