Invalidate paint properties on paint offset changes

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc.
  *               All rights reserved.
  * Copyright (C) Research In Motion Limited 2010. 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 238 matching lines @@
 
 void LayoutBlock::updateFromStyle() {
   LayoutBox::updateFromStyle();
 
   bool shouldClipOverflow =
       !styleRef().isOverflowVisible() && allowsOverflowClip();
   if (shouldClipOverflow != hasOverflowClip()) {
     if (!shouldClipOverflow)
       getScrollableArea()->invalidateAllStickyConstraints();
     setMayNeedPaintInvalidationSubtree();
+    if (RuntimeEnabledFeatures::slimmingPaintInvalidationEnabled()) {
+      // The overflow clip paint property depends on whether overflow clip is
+      // present so we need to update paint properties if this changes.
+      setNeedsPaintPropertyUpdate();
+    }
   }
   setHasOverflowClip(shouldClipOverflow);
 }
 
 bool LayoutBlock::allowsOverflowClip() const {
   // If overflow has been propagated to the viewport, it has no effect here.
   return node() != document().viewportDefiningElement();
 }
 
 void LayoutBlock::addChildBeforeDescendant(LayoutObject* newChild,
@@ skipping 1930 matching lines @@
   }
 
   return availableHeight;
 }
 
 bool LayoutBlock::hasDefiniteLogicalHeight() const {
   return availableLogicalHeightForPercentageComputation() != LayoutUnit(-1);
 }
 
 }  // namespace blink