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

public/platform/modules/serviceworker/WebServiceWorkerCacheStorage.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 WebServiceWorkerCacheStorage_h
 #define WebServiceWorkerCacheStorage_h
 
 #include "public/platform/WebCallbacks.h"
 #include "public/platform/WebCommon.h"
 #include "public/platform/WebPassOwnPtr.h"
 #include "public/platform/WebServiceWorkerCache.h"
 #include "public/platform/WebServiceWorkerCacheError.h"
 #include "public/platform/WebString.h"
 #include "public/platform/WebVector.h"
 
 namespace blink {
 
 class WebServiceWorkerCache;
 
 // An interface to the CacheStorage API, implemented by the embedder and passed in to Blink. Blink's implementation
 // of the ServiceWorker spec will call these methods to create/open caches, and expect callbacks from the embedder
 // after operations complete.
 class WebServiceWorkerCacheStorage {
 public:
-    class CacheStorageCallbacks : public WebCallbacks<void, WebServiceWorkerCacheError> {
-    public:
-        void onError(WebServiceWorkerCacheError* e)
-        {
-            onError(*e);
-            delete e;
-        }
-        void onError(WebServiceWorkerCacheError) override {}
-    };
-    class CacheStorageWithCacheCallbacks : public WebCallbacks<WebPassOwnPtr<WebServiceWorkerCache>, WebServiceWorkerCacheError> {
-    public:
-        void onSuccess(WebServiceWorkerCache* r)
-        {
-            onSuccess(adoptWebPtr(r));
-        }
-        void onError(WebServiceWorkerCacheError* e)
-        {
-            onError(*e);
-            delete e;
-        }
-        void onSuccess(WebPassOwnPtr<WebServiceWorkerCache>) override {}
-        void onError(WebServiceWorkerCacheError) override {}
-    };
-    class CacheStorageKeysCallbacks : public WebCallbacks<const WebVector<WebString>&, WebServiceWorkerCacheError> {
-    public:
-        void onSuccess(WebVector<WebString>* r) { onSuccess(*r); }
-        void onError(WebServiceWorkerCacheError* e)
-        {
-            onError(*e);
-            delete e;
-        }
-        void onSuccess(const WebVector<WebString>&) override {}
-        void onError(WebServiceWorkerCacheError) override {}
-    };
-    class CacheStorageMatchCallbacks : public WebCallbacks<const WebServiceWorkerResponse&, WebServiceWorkerCacheError> {
-    public:
-        void onSuccess(WebServiceWorkerResponse* r) { onSuccess(*r); }
-        void onError(WebServiceWorkerCacheError* e)
-        {
-            onError(*e);
-            delete e;
-        }
-        void onSuccess(const WebServiceWorkerResponse&) override {}
-        void onError(WebServiceWorkerCacheError) override {}
-    };
+    using CacheStorageCallbacks = WebCallbacks<void, WebServiceWorkerCacheError>;
+    using CacheStorageWithCacheCallbacks = WebCallbacks<WebPassOwnPtr<WebServiceWorkerCache>, WebServiceWorkerCacheError>;
+    using CacheStorageKeysCallbacks = WebCallbacks<const WebVector<WebString>&, WebServiceWorkerCacheError>;
+    using CacheStorageMatchCallbacks = WebCallbacks<const WebServiceWorkerResponse&, WebServiceWorkerCacheError>;
 
     virtual ~WebServiceWorkerCacheStorage() { }
 
     // Ownership of the CacheStorage*Callbacks methods passes to the WebServiceWorkerCacheStorage instance, which
     // will delete it after calling onSuccess or onFailure.
 
     // dispatchOpen() can return a WebServiceWorkerCache object. These
     // objects are owned by Blink and should be destroyed when they are no
     // longer needed.
     virtual void dispatchHas(CacheStorageCallbacks*, const WebString& cacheName) = 0;
     virtual void dispatchOpen(CacheStorageWithCacheCallbacks*, const WebString& cacheName) = 0;
     virtual void dispatchDelete(CacheStorageCallbacks*, const WebString& cacheName) = 0;
     virtual void dispatchKeys(CacheStorageKeysCallbacks*) = 0;
     virtual void dispatchMatch(CacheStorageMatchCallbacks*, const WebServiceWorkerRequest&, const WebServiceWorkerCache::QueryParams&) = 0;
 };
 
 } // namespace blink
 
 #endif // WebServiceWorkerCacheStorage_h