Reland of "Tracking reference filter mutation via SVGElementProxy"

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

Index: third_party/WebKit/Source/core/layout/svg/LayoutSVGResourceFilter.cpp
diff --git a/third_party/WebKit/Source/core/layout/svg/LayoutSVGResourceFilter.cpp b/third_party/WebKit/Source/core/layout/svg/LayoutSVGResourceFilter.cpp
index 68359ae550dde9fa64067eba0034db481e5edbd8..6f9babbf90fd64e9c1e7795c1e52bc936965048c 100644
--- a/third_party/WebKit/Source/core/layout/svg/LayoutSVGResourceFilter.cpp
+++ b/third_party/WebKit/Source/core/layout/svg/LayoutSVGResourceFilter.cpp
@@ -60,6 +60,10 @@ bool LayoutSVGResourceFilter::isChildAllowed(LayoutObject* child,
   return child->isSVGResourceFilterPrimitive();
 }
 
+SVGElementProxySet* LayoutSVGResourceFilter::elementProxySet() {
+  return &toSVGFilterElement(*element()).elementProxySet();
+}
+
 void LayoutSVGResourceFilter::removeAllClientsFromCache(
     bool markForInvalidation) {
   // LayoutSVGResourceFilter::removeClientFromCache will be called for
@@ -136,7 +140,7 @@ void LayoutSVGResourceFilter::primitiveAttributeChanged(
     // Issue paint invalidations for the image on the screen.
     markClientForInvalidation(filter.key, PaintInvalidation);
   }
-  markAllResourceClientsForInvalidation();
+  notifyContentChanged();
 }
 
 }  // namespace blink