content: permissions: add plumbing to revoke permissions

content/child/permissions/permission_dispatcher_thread_proxy.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 CONTENT_CHILD_PERMISSIONS_PERMISSION_DISPATCHER_THREAD_PROXY_H_
 #define CONTENT_CHILD_PERMISSIONS_PERMISSION_DISPATCHER_THREAD_PROXY_H_
 
 #include "base/id_map.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
@@ skipping 17 matching lines @@
     public PermissionObserversRegistry,
     public WorkerTaskRunner::Observer {
  public:
   static PermissionDispatcherThreadProxy* GetThreadInstance(
       base::SingleThreadTaskRunner* main_thread_task_runner,
       PermissionDispatcher* permissions_dispatcher);
 
   // blink::WebPermissionClient implementation.
   virtual void queryPermission(blink::WebPermissionType type,
                                const blink::WebURL& origin,
-                               blink::WebPermissionQueryCallback* callback);
+                               blink::WebPermissionCallback* callback);
+  virtual void revokePermission(blink::WebPermissionType type,
+                                const blink::WebURL& origin,
+                                blink::WebPermissionCallback* callback);
   virtual void startListening(blink::WebPermissionType type,
                               const blink::WebURL& origin,
                               blink::WebPermissionObserver* observer);
   virtual void stopListening(blink::WebPermissionObserver* observer);
 
   // WorkerTaskRunner::Observer implementation.
   void OnWorkerRunLoopStopped() override;
 
  private:
   PermissionDispatcherThreadProxy(
@@ skipping 10 matching lines @@
 
   scoped_refptr<base::SingleThreadTaskRunner> main_thread_task_runner_;
   PermissionDispatcher* permission_dispatcher_;
 
   DISALLOW_COPY_AND_ASSIGN(PermissionDispatcherThreadProxy);
 };
 
 }  // namespace content
 
 #endif // CONTENT_CHILD_PERMISSIONS_PERMISSION_DISPATCHER_THREAD_PROXY_H_