Reland of "Tracking reference filter mutation via SVGElementProxy"

third_party/WebKit/Source/core/dom/Element.cpp

Index: third_party/WebKit/Source/core/dom/Element.cpp
diff --git a/third_party/WebKit/Source/core/dom/Element.cpp b/third_party/WebKit/Source/core/dom/Element.cpp
index 2144390e627a4cb977ce75f86580e09f1bc675f7..1c05e659b357b017880ac47288d1d15b47ca1f8d 100644
--- a/third_party/WebKit/Source/core/dom/Element.cpp
+++ b/third_party/WebKit/Source/core/dom/Element.cpp
@@ -1748,9 +1748,6 @@ void Element::detachLayoutTree(const AttachContext& context) {
   if (context.clearInvalidation)
     document().styleEngine().styleInvalidator().clearInvalidation(*this);
 
-  if (svgFilterNeedsLayerUpdate())
-    document().unscheduleSVGFilterLayerUpdateHack(*this);
-
   setNeedsResizeObserverUpdate();
 
   DCHECK(needsAttach());
@@ -1955,8 +1952,7 @@ StyleRecalcChange Element::recalcOwnStyle(StyleRecalcChange change) {
 
   if (LayoutObject* layoutObject = this->layoutObject()) {
     if (localChange != NoChange ||
-        pseudoStyleCacheIsInvalid(oldStyle.get(), newStyle.get()) ||
-        svgFilterNeedsLayerUpdate()) {
+        pseudoStyleCacheIsInvalid(oldStyle.get(), newStyle.get())) {
       layoutObject->setStyle(newStyle.get());
     } else {
       // Although no change occurred, we use the new style so that the cousin
@@ -3619,10 +3615,6 @@ void Element::updateExtraNamedItemRegistration(const AtomicString& oldId,
     toHTMLDocument(document()).addExtraNamedItem(newId);
 }
 
-void Element::scheduleSVGFilterLayerUpdateHack() {
-  document().scheduleSVGFilterLayerUpdateHack(*this);
-}
-
 ScrollOffset Element::savedLayerScrollOffset() const {
   return hasRareData() ? elementRareData()->savedLayerScrollOffset()
                        : ScrollOffset();