Remove PageVisibilityObserver contextDestroyed() notifications.

third_party/WebKit/Source/modules/geolocation/Geolocation.h

 /*
  * Copyright (C) 2008, 2009, 2010, 2011 Apple Inc. All Rights Reserved.
  * Copyright 2010, The Android Open Source Project
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 48 matching lines @@
   DEFINE_WRAPPERTYPEINFO();
   USING_GARBAGE_COLLECTED_MIXIN(Geolocation);
 
  public:
   static Geolocation* create(ExecutionContext*);
   ~Geolocation();
   DECLARE_VIRTUAL_TRACE();
 
   // Inherited from ContextLifecycleObserver and PageVisibilityObserver.
   void contextDestroyed(ExecutionContext*) override;
-  void contextDestroyed(Page*) override;
 
   Document* document() const;
   LocalFrame* frame() const;
 
   // Creates a oneshot and attempts to obtain a position that meets the
   // constraints of the options.
   void getCurrentPosition(PositionCallback*,
                           PositionErrorCallback*,
                           const PositionOptions&);
 
@@ skipping 130 matching lines @@
 
   // Set to true when m_geolocationService is disconnected. This is used to
   // detect when m_geolocationService is disconnected and reconnected while
   // running callbacks in response to a call to onPositionUpdated().
   bool m_disconnectedGeolocationService = false;
 };
 
 }  // namespace blink
 
 #endif  // Geolocation_h