Get rid of obsolete FrameView::m_shouldUpdateViewportIntersection.

third_party/WebKit/Source/core/frame/FrameView.h

 /*
    Copyright (C) 1997 Martin Jones (mjones@kde.org)
              (C) 1998 Waldo Bastian (bastian@kde.org)
              (C) 1998, 1999 Torben Weis (weis@kde.org)
              (C) 1999 Lars Knoll (knoll@kde.org)
              (C) 1999 Antti Koivisto (koivisto@kde.org)
    Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights
    reserved.
 
    This library is free software; you can redistribute it and/or
@@ skipping 966 matching lines @@
   // LayoutObject for the viewport-defining element (see
   // Document::viewportDefiningElement).
   LayoutObject* viewportLayoutObject() const;
 
   void collectAnnotatedRegions(LayoutObject&,
                                Vector<AnnotatedRegionValue>&) const;
 
   template <typename Function>
   void forAllNonThrottledFrameViews(const Function&);
 
-  void setNeedsUpdateViewportIntersection();
   void updateViewportIntersectionsForSubtree(
       DocumentLifecycle::LifecycleState targetState);
   void updateRenderThrottlingStatus(bool hidden, bool subtreeThrottled);
   void notifyResizeObservers();
 
   // PaintInvalidationCapableScrollableArea
   LayoutScrollbarPart* resizer() const override { return nullptr; }
 
   bool checkLayoutInvalidationIsAllowed() const;
 
@@ skipping 70 matching lines @@
   IntSize m_initialViewportSize;
   bool m_layoutSizeFixedToFrameSize;
 
   Timer<FrameView> m_didScrollTimer;
 
   Vector<IntRect> m_tickmarks;
 
   float m_browserControlsViewportAdjustment;
 
   bool m_needsUpdateWidgetGeometries;
-  bool m_needsUpdateViewportIntersection;
-  bool m_needsUpdateViewportIntersectionInSubtree;
 
 #if ENABLE(ASSERT)
   // Verified when finalizing.
   bool m_hasBeenDisposed;
 #endif
 
   ScrollbarMode m_horizontalScrollbarMode;
   ScrollbarMode m_verticalScrollbarMode;
 
   bool m_horizontalScrollbarLock;
@@ skipping 118 matching lines @@
                   widget.isFrameView());
 DEFINE_TYPE_CASTS(FrameView,
                   ScrollableArea,
                   scrollableArea,
                   scrollableArea->isFrameView(),
                   scrollableArea.isFrameView());
 
 }  // namespace blink
 
 #endif  // FrameView_h