[SPv2] Fix property node invalidation for CSS masks

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
@@ skipping 2266 matching lines @@
           : classABreakPointValue(previousBreakAfterValue);
   return isForcedFragmentainerBreakValue(breakValue);
 }
 
 bool LayoutBox::paintedOutputOfObjectHasNoEffectRegardlessOfSize() const {
   if (hasNonCompositedScrollbars() || getSelectionState() != SelectionNone ||
       hasBoxDecorationBackground() || styleRef().hasBoxDecorations() ||
       styleRef().hasVisualOverflowingEffect())
     return false;
 
-  // If the box has clip or mask, we need issue paint invalidation to cover
+  // Both mask and clip-path generates drawing display items that depends on
+  // the size of the box.
+  if (hasMask() || hasClipPath())
+    return false;
+
+  // If the box has any kind of clip, we need issue paint invalidation to cover
   // the changed part of children when the box got resized. In SPv2 this is
   // handled by detecting paint property changes.
   if (!RuntimeEnabledFeatures::slimmingPaintV2Enabled()) {
-    if (hasClipRelatedProperty() || hasControlClip() || hasMask())
+    if (hasClipRelatedProperty() || hasControlClip())
       return false;
   }
 
   // If the box paints into its own backing, we can assume that it's painting
   // may have some effect. For example, honoring the border-radius clip on
   // a composited child paints into a mask for an otherwise non-painting
   // element, because children of that element will require the mask.
   if (hasLayer() && layer()->compositingState() == PaintsIntoOwnBacking)
     return false;
 
@@ skipping 3443 matching lines @@
 
 void LayoutBox::MutableForPainting::
     savePreviousContentBoxSizeAndLayoutOverflowRect() {
   auto& rareData = layoutBox().ensureRareData();
   rareData.m_hasPreviousContentBoxSizeAndLayoutOverflowRect = true;
   rareData.m_previousContentBoxSize = layoutBox().contentBoxRect().size();
   rareData.m_previousLayoutOverflowRect = layoutBox().layoutOverflowRect();
 }
 
 }  // namespace blink