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

Source/modules/push_messaging/PushPermissionStatusCallbacks.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/PushPermissionStatusCallbacks.h"
 
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "modules/push_messaging/PushError.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 PushPermissionStatusCallbacks::PushPermissionStatusCallbacks(ScriptPromiseResolver* resolver)
     : m_resolver(resolver)
 {
 }
 
 PushPermissionStatusCallbacks::~PushPermissionStatusCallbacks()
 {
 }
 
-void PushPermissionStatusCallbacks::onSuccess(WebPushPermissionStatus* status)
+void PushPermissionStatusCallbacks::onSuccess(WebPushPermissionStatus status)
 {
-    m_resolver->resolve(permissionString(*status));
+    m_resolver->resolve(permissionString(status));
 }
 
-void PushPermissionStatusCallbacks::onError(WebPushError* error)
+void PushPermissionStatusCallbacks::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));
 }
 
 // static
 String PushPermissionStatusCallbacks::permissionString(WebPushPermissionStatus status)
 {
     switch (status) {
     case WebPushPermissionStatusGranted:
         return "granted";
     case WebPushPermissionStatusDenied:
         return "denied";
     case WebPushPermissionStatusPrompt:
         return "prompt";
     }
 
     ASSERT_NOT_REACHED();
     return "denied";
 }
 
 } // namespace blink