[VR, Permission] Use appopriate type parameters for WebCallbacks (3/3)

public/platform/modules/permissions/WebPermissionClient.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 WebPermissionClient_h
 #define WebPermissionClient_h
 
 #include "public/platform/WebCallbacks.h"
 #include "public/platform/WebPassOwnPtr.h"
 #include "public/platform/WebVector.h"
 #include "public/platform/modules/permissions/WebPermissionStatus.h"
 #include "public/platform/modules/permissions/WebPermissionType.h"
 
 namespace blink {
 
-class WebPermissionCallback : public WebCallbacks<WebPermissionStatus, void> {
-public:
-    virtual void onSuccess(WebPermissionStatus) = 0;
-    void onSuccess(WebPermissionStatus* r)
-    {
-        onSuccess(*r);
-        delete r;
-    }
-};
+using WebPermissionCallback = WebCallbacks<WebPermissionStatus, void>;
 using WebPermissionsCallback = WebCallbacks<WebPassOwnPtr<WebVector<WebPermissionStatus>>, void>;
 
 class WebPermissionObserver;
 class WebURL;
 
 // This client is expected to do general permission handling. From simple
 // permission query to requesting new permissions.
 class WebPermissionClient {
 public:
     // Query the permission status of a given origin for a specific permission.
@@ skipping 18 matching lines @@
     // observer.
     virtual void stopListening(WebPermissionObserver*) { }
 
 protected:
     virtual ~WebPermissionClient() { }
 };
 
 } // namespace blink
 
 #endif // WebPermissionClient_h