[PushMessaging] Use appopriate type parameters for WebCallbacks (1/3).

Source/modules/push_messaging/PushSubscriptionCallbacks.cpp

 // 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.
 
 #include "config.h"
 #include "modules/push_messaging/PushSubscriptionCallbacks.h"
 
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "modules/push_messaging/PushError.h"
 #include "modules/push_messaging/PushSubscription.h"
 #include "modules/serviceworkers/ServiceWorkerRegistration.h"
+#include "public/platform/modules/push_messaging/WebPushSubscription.h"
 
 namespace blink {
 
 PushSubscriptionCallbacks::PushSubscriptionCallbacks(ScriptPromiseResolver* resolver, ServiceWorkerRegistration* serviceWorkerRegistration)
     : m_resolver(resolver)
     , m_serviceWorkerRegistration(serviceWorkerRegistration)
 {
     ASSERT(m_resolver);
     ASSERT(m_serviceWorkerRegistration);
 }
 
 PushSubscriptionCallbacks::~PushSubscriptionCallbacks()
 {
 }
 
-void PushSubscriptionCallbacks::onSuccess(WebPushSubscription* webPushSubscription)
+void PushSubscriptionCallbacks::onSuccess(WebPassOwnPtr<WebPushSubscription> webPushSubscription)
 {
     if (!m_resolver->executionContext() || m_resolver->executionContext()->activeDOMObjectsAreStopped())
         return;
 
-    if (!webPushSubscription) {
-        m_resolver->resolve(v8::Null(m_resolver->scriptState()->isolate()));
-        return;
-    }
-    m_resolver->resolve(PushSubscription::take(m_resolver.get(), webPushSubscription, m_serviceWorkerRegistration));
+    m_resolver->resolve(PushSubscription::take(m_resolver.get(), webPushSubscription.release(), m_serviceWorkerRegistration));
 }
 
-void PushSubscriptionCallbacks::onError(WebPushError* error)
+void PushSubscriptionCallbacks::onError(const WebPushError& error)
 {
-    OwnPtr<WebPushError> ownError = adoptPtr(error);
     if (!m_resolver->executionContext() || m_resolver->executionContext()->activeDOMObjectsAreStopped())
         return;
-    m_resolver->reject(PushError::take(m_resolver.get(), *ownError));
+    m_resolver->reject(PushError::take(m_resolver.get(), error));
 }
 
 } // namespace blink