ServiceWorker: Add 'updatefound' and version attributes on SWRegistration (Blink)

public/platform/WebServiceWorkerRegistrationProxy.h

+// Copyright 2014 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 WebServiceWorkerRegistrationProxy_h
+#define WebServiceWorkerRegistrationProxy_h
+
+namespace blink {
+
+class WebServiceWorker;
+
+// A proxy interface, passed via WebServiceWorkerRegistration.setProxy() from
+// blink to the embedder, to talk to the ServiceWorkerRegistration object from
+// embedder.
+class WebServiceWorkerRegistrationProxy {
+public:
+    WebServiceWorkerRegistrationProxy() { }
+    virtual ~WebServiceWorkerRegistrationProxy() { }
+
+    // Notifies that the registration entered the installation process.
+    // The installing worker should be accessible via
+    // WebServiceWorkerRegistration.installing.
+    virtual void dispatchUpdateFoundEvent() = 0;
+
+    virtual void setInstalling(WebServiceWorker*) = 0;
+    virtual void setWaiting(WebServiceWorker*) = 0;
+    virtual void setActive(WebServiceWorker*) = 0;
+};
+
+} // namespace blink
+
+#endif // WebServiceWorkerRegistrationProxy_h