Invalidate paint properties on paint offset changes

third_party/WebKit/Source/core/layout/svg/LayoutSVGRoot.cpp

 /*
  * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2007, 2008, 2009 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Google, Inc.
  * Copyright (C) Research In Motion Limited 2011. 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
  * License as published by the Free Software Foundation; either
@@ skipping 143 matching lines @@
   SVGLayoutSupport::layoutResourcesIfNeeded(this);
 
   // selfNeedsLayout() will cover changes to one (or more) of viewBox,
   // current{Scale,Translate} and decorations.
   const bool viewportMayHaveChanged = selfNeedsLayout() || oldSize != size();
 
   // The scale of one or more of the SVG elements may have changed, or new
   // content may have been exposed, so mark the entire subtree as needing paint
   // invalidation checking. (It is only somewhat by coincidence that this
   // condition happens to be the same as the one for viewport changes.)
-  if (viewportMayHaveChanged)
+  if (viewportMayHaveChanged) {
     setMayNeedPaintInvalidationSubtree();
+    if (RuntimeEnabledFeatures::slimmingPaintInvalidationEnabled())
+      setNeedsPaintPropertyUpdate();
+  }
 
   SVGSVGElement* svg = toSVGSVGElement(node());
   ASSERT(svg);
   // When hasRelativeLengths() is false, no descendants have relative lengths
   // (hence no one is interested in viewport size changes).
   m_isLayoutSizeChanged = viewportMayHaveChanged && svg->hasRelativeLengths();
 
   SVGLayoutSupport::layoutChildren(
       firstChild(), false, m_didScreenScaleFactorChange, m_isLayoutSizeChanged);
 
@@ skipping 289 matching lines @@
       if (result.addNodeToListBasedTestResult(node(), locationInContainer,
                                               boundsRect) == StopHitTesting)
         return true;
     }
   }
 
   return false;
 }
 
 }  // namespace blink