Do not use Node in FocusController, 2nd

third_party/WebKit/Source/core/page/FocusController.h

 /*
  * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
  *
  * 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 74 matching lines @@
 
     DECLARE_TRACE();
 
 private:
     explicit FocusController(Page*);
 
     Element* findFocusableElement(WebFocusType, Element&);
 
     bool advanceFocus(WebFocusType, bool initialFocus, InputDeviceCapabilities* sourceCapabilities = nullptr);
     bool advanceFocusDirectionally(WebFocusType);
-    bool advanceFocusInDocumentOrder(LocalFrame*, Node* startingNode, WebFocusType, bool initialFocus, InputDeviceCapabilities* sourceCapabilities);
+    bool advanceFocusInDocumentOrder(LocalFrame*, Element* start, WebFocusType, bool initialFocus, InputDeviceCapabilities* sourceCapabilities);
 
     bool advanceFocusDirectionallyInContainer(Node* container, const LayoutRect& startingRect, WebFocusType);
     void findFocusCandidateInContainer(Node& container, const LayoutRect& startingRect, WebFocusType, FocusCandidate& closest);
 
     RawPtrWillBeMember<Page> m_page;
     RefPtrWillBeMember<Frame> m_focusedFrame;
     bool m_isActive;
     bool m_isFocused;
     bool m_isChangingFocusedFrame;
 };
 
 } // namespace blink
 
 #endif // FocusController_h