Implement support for link type serviceworker in link elements.

third_party/WebKit/Source/modules/serviceworkers/ServiceWorkerLinkResource.h

+// 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 ServiceWorkerLinkResource_h
+#define ServiceWorkerLinkResource_h
+
+#include "core/html/LinkResource.h"
+#include "modules/ModulesExport.h"
+#include "wtf/Allocator.h"
+#include "wtf/PassOwnPtr.h"
+#include "wtf/RefPtr.h"
+
+namespace blink {
+
+class HTMLLinkElement;
+
+class MODULES_EXPORT ServiceWorkerLinkResource final : public LinkResource {
+    USING_FAST_MALLOC_WILL_BE_REMOVED(ServiceWorkerLinkResource);
+public:
+
+    static PassOwnPtrWillBeRawPtr<ServiceWorkerLinkResource> create(HTMLLinkElement* owner);
+
+    ~ServiceWorkerLinkResource() override;
+
+    // LinkResource implementation:
+    void process() override;
+    LinkResourceType type() const override { return Other; }
+    bool hasLoaded() const override;
+    void ownerRemoved() override;
+
+private:
+    explicit ServiceWorkerLinkResource(HTMLLinkElement* owner);
+};
+
+} // namespace blink
+
+#endif // ServiceWorkerLinkResource_h