CallbackPromiseAdapter types should be more compatible with WebCallbacks (1/3).

Source/modules/cachestorage/CacheStorageError.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 CacheStorageError_h
 #define CacheStorageError_h
 
 #include "public/platform/WebServiceWorkerCacheError.h"
 #include "wtf/Noncopyable.h"
+#include "wtf/OwnPtr.h"
 #include "wtf/PassOwnPtr.h"
 
 namespace blink {
 
 class DOMException;
 class ScriptPromiseResolver;
 
 class CacheStorageError {
     WTF_MAKE_NONCOPYABLE(CacheStorageError);
 public:
     // For CallbackPromiseAdapter. Ownership of a given error is not
     // transferred.
-    using WebType = WebServiceWorkerCacheError;
-    static DOMException* take(ScriptPromiseResolver*, PassOwnPtr<WebType> webError);
+    using WebType = OwnPtr<WebServiceWorkerCacheError>;
+    static DOMException* take(ScriptPromiseResolver*, PassOwnPtr<WebServiceWorkerCacheError> webError);
 
-    static DOMException* createException(WebType webError);
+    static DOMException* createException(WebServiceWorkerCacheError webError);
 };
 
 } // namespace blink
 
 #endif // CacheStorageError_h