CachedMetadata support for ServiceWorker script.

Source/modules/serviceworkers/ServiceWorkerScriptCachedMetadataHandler.h

+// Copyright 2015 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 ServiceWorkerScriptCachedMetadataHandler_h
+#define ServiceWorkerScriptCachedMetadataHandler_h
+
+#include "core/fetch/CachedMetadataHandler.h"
+#include "platform/weborigin/KURL.h"
+#include "wtf/PassOwnPtr.h"
+#include "wtf/Vector.h"
+
+namespace blink {
+
+class WorkerGlobalScope;
+class CachedMetadata;
+
+class ServiceWorkerScriptCachedMetadataHandler : public CachedMetadataHandler {
+public:
+    static PassOwnPtr<ServiceWorkerScriptCachedMetadataHandler> create(WorkerGlobalScope* workerGlobalScope, const KURL& scriptURL, const Vector<char>* metaData)
+    {
+        return adoptPtr(new ServiceWorkerScriptCachedMetadataHandler(workerGlobalScope, scriptURL, metaData));
+    }
+    ~ServiceWorkerScriptCachedMetadataHandler() override;
+    void setCachedMetadata(unsigned dataTypeID, const char*, size_t, CacheType) override;
+    void clearCachedMetadata(CacheType) override;
+    CachedMetadata* cachedMetadata(unsigned dataTypeID) const override;
+    String encoding() const override;
+
+private:
+    ServiceWorkerScriptCachedMetadataHandler(WorkerGlobalScope*, const KURL& scriptURL, const Vector<char>* metaData);
+
+    WorkerGlobalScope* m_workerGlobalScope;
+    KURL m_scriptURL;
+    RefPtr<CachedMetadata> m_cachedMetadata;
+};
+
+} // namespace blink
+
+#endif // ServiceWorkerScriptCachedMetadataHandler_h