[ServiceWorker] Use appopriate type parameters for WebCallbacks (3/3)

public/platform/modules/serviceworker/WebServiceWorkerProvider.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 34 matching lines @@
 
 // Created on the main thread, and may be passed to another script context
 // thread (e.g. worker thread) later. All methods of this class must be called
 // on the single script context thread.
 class WebServiceWorkerProvider {
 public:
     // Called when a client wants to start listening to the service worker
     // events. Must be cleared before the client becomes invalid.
     virtual void setClient(WebServiceWorkerProviderClient*) { }
 
-    class WebServiceWorkerRegistrationCallbacks : public WebCallbacks<WebPassOwnPtr<WebServiceWorkerRegistration>, const WebServiceWorkerError&> {
-    public:
-        void onSuccess(WebServiceWorkerRegistration* r) { onSuccess(adoptWebPtr(r)); }
-        void onError(WebServiceWorkerError* e)
-        {
-            onError(*e);
-            delete e;
-        }
-        virtual void onSuccess(WebPassOwnPtr<WebServiceWorkerRegistration>) = 0;
-        virtual void onError(const WebServiceWorkerError&) = 0;
-    };
-    using WebServiceWorkerGetRegistrationCallbacks = WebServiceWorkerRegistrationCallbacks;
-    class WebServiceWorkerGetRegistrationsCallbacks : public WebCallbacks<WebPassOwnPtr<WebVector<WebServiceWorkerRegistration*>>, const WebServiceWorkerError&> {
-    public:
-        void onSuccess(WebVector<WebServiceWorkerRegistration*>* r) { onSuccess(adoptWebPtr(r)); }
-        void onError(WebServiceWorkerError* e)
-        {
-            onError(*e);
-            delete e;
-        }
-        virtual void onSuccess(WebPassOwnPtr<WebVector<WebServiceWorkerRegistration*>>) = 0;
-        virtual void onError(const WebServiceWorkerError&) = 0;
-    };
-    class WebServiceWorkerGetRegistrationForReadyCallbacks : public WebCallbacks<WebPassOwnPtr<WebServiceWorkerRegistration>, void> {
-    public:
-        void onSuccess(WebServiceWorkerRegistration* r) { onSuccess(adoptWebPtr(r)); }
-        virtual void onSuccess(WebPassOwnPtr<WebServiceWorkerRegistration>) = 0;
-    };
+    using WebServiceWorkerRegistrationCallbacks = WebCallbacks<WebPassOwnPtr<WebServiceWorkerRegistration>, const WebServiceWorkerError&>;
+    using WebServiceWorkerGetRegistrationCallbacks = WebCallbacks<WebPassOwnPtr<WebServiceWorkerRegistration>, const WebServiceWorkerError&>;
+    // Each element's ownership is transferred.
+    // TODO(yhirano): Consider using vector<scoped_ptr<>>.
+    using WebServiceWorkerGetRegistrationsCallbacks = WebCallbacks<WebPassOwnPtr<WebVector<WebServiceWorkerRegistration*>>, const WebServiceWorkerError&>;
+    using WebServiceWorkerGetRegistrationForReadyCallbacks = WebCallbacks<WebPassOwnPtr<WebServiceWorkerRegistration>, void>;
 
     virtual void registerServiceWorker(const WebURL& pattern, const WebURL& scriptUrl, WebServiceWorkerRegistrationCallbacks*) { }
     virtual void getRegistration(const WebURL& documentURL, WebServiceWorkerGetRegistrationCallbacks*) { }
     virtual void getRegistrations(WebServiceWorkerGetRegistrationsCallbacks*) { }
     virtual void getRegistrationForReady(WebServiceWorkerGetRegistrationForReadyCallbacks*) { }
     virtual bool validateScopeAndScriptURL(const WebURL& scope, const WebURL& scriptURL, WebString* errorMessage) { return false; }
 
     virtual ~WebServiceWorkerProvider() { }
 };
 
 } // namespace blink
 
 #endif