[cleanup] WebPermissionClient.h is no longer present.

third_party/WebKit/Source/modules/permissions/PermissionController.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 PermissionController_h
 #define PermissionController_h
 
 #include "core/frame/DOMWindowProperty.h"
 #include "modules/ModulesExport.h"
 #include "platform/Supplementable.h"
 
 namespace blink {
 
-class WebPermissionClient;
-
 class MODULES_EXPORT PermissionController final
     : public GarbageCollectedFinalized<PermissionController>,
       public Supplement<LocalFrame>,
       public DOMWindowProperty {
   WTF_MAKE_NONCOPYABLE(PermissionController);
   USING_GARBAGE_COLLECTED_MIXIN(PermissionController);
 
  public:
   virtual ~PermissionController();
 
-  static void provideTo(LocalFrame&, WebPermissionClient*);
+  static void provideTo(LocalFrame&);
   static PermissionController* from(LocalFrame&);
   static const char* supplementName();
 
-  WebPermissionClient* client() const;
-
   DECLARE_VIRTUAL_TRACE();
 
  private:
-  PermissionController(LocalFrame&, WebPermissionClient*);
+  PermissionController(LocalFrame&);
 
   // Inherited from DOMWindowProperty.
   void frameDestroyed() override;
-
-  WebPermissionClient* m_client;
 };
 
 }  // namespace blink
 
 #endif  // PermissionController_h