Don't include contents visual overflow into paint invalidation rect

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

 /*
  * Copyright (C) 1997 Martin Jones (mjones@kde.org)
  *           (C) 1997 Torben Weis (weis@kde.org)
  *           (C) 1998 Waldo Bastian (bastian@kde.org)
  *           (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. 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 336 matching lines @@
             left = std::max(left, above->borderHalfLeft(true));
             right = std::max(right, above->borderHalfRight(true));
         }
     }
     if (bottom) {
         if (LayoutTableCell* below = table()->cellBelow(this)) {
             left = std::max(left, below->borderHalfLeft(true));
             right = std::max(right, below->borderHalfRight(true));
         }
     }
-    LayoutPoint location(std::max(LayoutUnit(left), -visualOverflowRect().x()), std::max(LayoutUnit(top), -visualOverflowRect().y()));
-    return LayoutRect(-location.x(), -location.y(), location.x() + std::max(size().width() + right, visualOverflowRect().maxX()), location.y() + std::max(size().height() + bottom, visualOverflowRect().maxY()));
+
+    LayoutRect selfVisualOverflowRect = this->selfVisualOverflowRect();
+    LayoutPoint location(std::max(LayoutUnit(left), -selfVisualOverflowRect.x()), std::max(LayoutUnit(top), -selfVisualOverflowRect.y()));
+    return LayoutRect(-location.x(), -location.y(), location.x() + std::max(size().width() + right, selfVisualOverflowRect.maxX()), location.y() + std::max(size().height() + bottom, selfVisualOverflowRect.maxY()));
 }
 
 bool LayoutTableCell::mapToVisualRectInAncestorSpace(const LayoutBoxModelObject* ancestor, LayoutRect& r, VisualRectFlags visualRectFlags) const
 {
     if (ancestor == this)
         return true;
     if (parent())
         r.moveBy(-parentBox()->location()); // Rows are in the same coordinate space, so don't add their offset in.
     return LayoutBlockFlow::mapToVisualRectInAncestorSpace(ancestor, r, visualRectFlags);
 }
@@ skipping 639 matching lines @@
 bool LayoutTableCell::backgroundIsKnownToBeOpaqueInRect(const LayoutRect& localRect) const
 {
     // If this object has layer, the area of collapsed borders should be transparent
     // to expose the collapsed borders painted on the underlying layer.
     if (hasLayer() && table()->collapseBorders())
         return false;
     return LayoutBlockFlow::backgroundIsKnownToBeOpaqueInRect(localRect);
 }
 
 } // namespace blink