Set needs paint property update for changes of SVG isolation and blending.

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

 /*
  * Copyright (c) 2009, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 107 matching lines @@
       setNeedsTransformUpdate();
   }
 
   if (isBlendingAllowed()) {
     bool hasBlendModeChanged =
         (oldStyle && oldStyle->hasBlendMode()) == !style()->hasBlendMode();
     if (parent() && hasBlendModeChanged)
       parent()->descendantIsolationRequirementsChanged(
           style()->hasBlendMode() ? DescendantIsolationRequired
                                   : DescendantIsolationNeedsUpdate);
+
+    if (hasBlendModeChanged)
+      setNeedsPaintPropertyUpdate();
   }
 
   LayoutObject::styleDidChange(diff, oldStyle);
   SVGResourcesCache::clientStyleChanged(this, diff, styleRef());
 }
 
 bool LayoutSVGModelObject::nodeAtPoint(HitTestResult&,
                                        const HitTestLocation&,
                                        const LayoutPoint&,
                                        HitTestAction) {
   ASSERT_NOT_REACHED();
   return false;
 }
 
 // The SVG addOutlineRects() method adds rects in local coordinates so the
 // default absoluteElementBoundingBoxRect() returns incorrect values for SVG
 // objects. Overriding this method provides access to the absolute bounds.
 IntRect LayoutSVGModelObject::absoluteElementBoundingBoxRect() const {
   return localToAbsoluteQuad(FloatQuad(visualRectInLocalSVGCoordinates()))
       .enclosingBoundingBox();
 }
 
 }  // namespace blink