Merge //content/child/permissions into Blink's permissions module.

third_party/WebKit/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/WebVector.h"
-#include "public/platform/modules/permissions/WebPermissionStatus.h"
-#include "public/platform/modules/permissions/WebPermissionType.h"
-
-#include <memory>
-
-namespace blink {
-
-using WebPermissionCallback = WebCallbacks<WebPermissionStatus, void>;
-using WebPermissionsCallback = WebCallbacks<std::unique_ptr<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.
-    virtual void queryPermission(WebPermissionType, const WebURL&, WebPermissionCallback*) { }
-
-    // Request a specific permission for a given origin.
-    virtual void requestPermission(WebPermissionType, const WebURL&, WebPermissionCallback*) { }
-
-    // Request some permissions for a given origin.
-    virtual void requestPermissions(const WebVector<WebPermissionType>&, const WebURL&, WebPermissionsCallback*) { }
-
-    // Revoke a specific permission for a given origin.
-    virtual void revokePermission(WebPermissionType, const WebURL&, WebPermissionCallback*) { }
-
-    // Listen for permission changes for a given origin and inform the observer
-    // when they happen. The observer is not owned by the WebPermissionClient.
-    // The client should expect stopListening() to be called when the observer
-    // will be destroyed.
-    virtual void startListening(WebPermissionType, const WebURL&, WebPermissionObserver*) { }
-
-    // Stop listening to all the permission changes associated with the given
-    // observer.
-    virtual void stopListening(WebPermissionObserver*) { }
-
-protected:
-    virtual ~WebPermissionClient() { }
-};
-
-} // namespace blink
-
-#endif // WebPermissionClient_h