Remove LayoutBlockFlow overflow invalidation

third_party/WebKit/Source/core/layout/LayoutBox.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  *           (C) 2005, 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 1538 matching lines @@
     if (fullInvalidationReason == PaintInvalidationDelayedFull) {
         if (!intersectsVisibleViewport())
             return PaintInvalidationDelayedFull;
 
         // Reset state back to regular full paint invalidation if the object is onscreen.
         setShouldDoFullPaintInvalidation(PaintInvalidationFull);
     }
 
     PaintInvalidationReason reason = LayoutBoxModelObject::invalidatePaintIfNeeded(paintInvalidationState);
 
-    if (!isFullPaintInvalidationReason(reason))
-        invalidatePaintForOverflowIfNeeded();
-
     if (PaintLayerScrollableArea* area = getScrollableArea())
         area->invalidatePaintOfScrollControlsIfNeeded(paintInvalidationState);
 
     // This is for the next invalidatePaintIfNeeded so must be at the end.
     savePreviousBoxSizesIfNeeded();
     return reason;
 }
 
 void LayoutBox::invalidatePaintOfSubtreesIfNeeded(const PaintInvalidationState& childPaintInvalidationState)
 {
@@ skipping 3353 matching lines @@
         m_rareData->m_snapAreas->remove(&snapArea);
     }
 }
 
 SnapAreaSet* LayoutBox::snapAreas() const
 {
     return m_rareData ? m_rareData->m_snapAreas.get() : nullptr;
 }
 
 } // namespace blink