blink: permissions: add plumbing to revoke permissions

Source/modules/permissions/PermissionQueryCallback.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 PermissionQueryCallback_h
-#define PermissionQueryCallback_h
-
-#include "platform/heap/Handle.h"
-#include "public/platform/WebCallbacks.h"
-#include "public/platform/modules/permissions/WebPermissionStatus.h"
-#include "public/platform/modules/permissions/WebPermissionType.h"
-#include "wtf/Noncopyable.h"
-#include "wtf/PassRefPtr.h"
-#include "wtf/RefPtr.h"
-
-namespace blink {
-
-class ScriptPromiseResolver;
-
-// PermissionQueryCallback is an implementation of WebPermissionQueryCallbacks
-// that will resolve the underlying promise depending on the result passed to
-// the callback. It takes a WebPermissionType in its constructor and will pass
-// it to the PermissionStatus.
-class PermissionQueryCallback final
-    : public WebCallbacks<WebPermissionStatus, void> {
-public:
-    explicit PermissionQueryCallback(PassRefPtr<ScriptPromiseResolver>, WebPermissionType);
-    ~PermissionQueryCallback() override;
-
-    void onSuccess(WebPermissionStatus*) override;
-    void onError() override;
-
-private:
-    RefPtr<ScriptPromiseResolver> m_resolver;
-    WebPermissionType m_permissionType;
-
-    WTF_MAKE_NONCOPYABLE(PermissionQueryCallback);
-};
-
-} // namespace blink
-
-#endif // PermissionQueryCallback_h