Make ScriptPromiseResolver RefCountedWillBeRefCountedGarbageCollected.

Source/modules/push_messaging/PushPermissionStatusCallback.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 PushPermissionStatusCallback_h
 #define PushPermissionStatusCallback_h
 
 #include "public/platform/WebPushClient.h"
 #include "public/platform/WebPushPermissionStatus.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefPtr.h"
 
 namespace WTF {
 class String;
 }
 
 namespace blink {
 
 class ScriptPromiseResolver;
 
 // Will resolve the underlying promise depending on the permission passed to the callback.
 class PushPermissionStatusCallback final : public WebPushPermissionStatusCallback {
     WTF_MAKE_NONCOPYABLE(PushPermissionStatusCallback);
 
 public:
-    explicit PushPermissionStatusCallback(PassRefPtr<ScriptPromiseResolver>);
+    explicit PushPermissionStatusCallback(PassRefPtrWillBeRawPtr<ScriptPromiseResolver>);
     virtual ~PushPermissionStatusCallback();
 
     void onSuccess(WebPushPermissionStatus*) override;
 
     // Called if for some reason the status of the push permission cannot be checked.
     void onError() override;
 
 private:
     static const WTF::String& permissionString(WebPushPermissionStatus);
-    RefPtr<ScriptPromiseResolver> m_resolver;
+    RefPtrWillBePersistent<ScriptPromiseResolver> m_resolver;
 };
 
 } // namespace blink
 
 #endif // PushPermissionStatusCallback_h