Fixed clip resize for document.rootScroller with inertTopControls

third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.h

 /*
  * Copyright (C) 2003, 2009, 2012 Apple Inc. All rights reserved.
  *
  * Portions are Copyright (C) 1998 Netscape Communications Corporation.
  *
  * Other contributors:
  *   Robert O'Callahan <roc+@cs.cmu.edu>
  *   David Baron <dbaron@fas.harvard.edu>
  *   Christian Biesinger <cbiesinger@web.de>
  *   Randall Jesup <rjesup@wgate.com>
@@ skipping 389 matching lines @@
   void setTopmostScrollChild(PaintLayer*);
   PaintLayer* topmostScrollChild() const {
     DCHECK(!m_nextTopmostScrollChild);
     return m_topmostScrollChild;
   }
 
   IntRect resizerCornerRect(const IntRect&, ResizerHitTestType) const;
 
   // TODO(ymalik): Remove box() and update callers to use layoutBox() instead.
   LayoutBox& box() const;
-  PaintLayer* layer() const;
+  PaintLayer* layer() const override;
 
   LayoutScrollbarPart* resizer() const override { return m_resizer; }
 
   const IntPoint& cachedOverlayScrollbarOffset() {
     return m_cachedOverlayScrollbarOffset;
   }
   void setCachedOverlayScrollbarOffset(const IntPoint& offset) {
     m_cachedOverlayScrollbarOffset = offset;
   }
 
@@ skipping 163 matching lines @@
 
 DEFINE_TYPE_CASTS(PaintLayerScrollableArea,
                   ScrollableArea,
                   scrollableArea,
                   scrollableArea->isPaintLayerScrollableArea(),
                   scrollableArea.isPaintLayerScrollableArea());
 
 }  // namespace blink
 
 #endif  // LayerScrollableArea_h