Revert of Tracking filter mutation via SVGElementProxy

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

Index: third_party/WebKit/Source/core/dom/Document.cpp
diff --git a/third_party/WebKit/Source/core/dom/Document.cpp b/third_party/WebKit/Source/core/dom/Document.cpp
index b41c5fd2076b51ac0628490cf9f6743aa9661a8d..d1a185e5527a3c99ea73004ace5e1bb2bd12e6ec 100644
--- a/third_party/WebKit/Source/core/dom/Document.cpp
+++ b/third_party/WebKit/Source/core/dom/Document.cpp
@@ -1568,6 +1568,8 @@
     return false;
   if (!m_useElementsNeedingUpdate.isEmpty())
     return true;
+  if (!m_layerUpdateSVGFilterElements.isEmpty())
+    return true;
   if (needsStyleRecalc())
     return true;
   if (needsStyleInvalidation())
@@ -1958,8 +1960,11 @@
 
   if (Element* documentElement = this->documentElement()) {
     inheritHtmlAndBodyElementStyles(change);
+    dirtyElementsForLayerUpdate();
     if (documentElement->shouldCallRecalcStyle(change))
       documentElement->recalcStyle(change);
+    while (dirtyElementsForLayerUpdate())
+      documentElement->recalcStyle(NoChange);
   }
 
   view()->recalcOverflowAfterStyleChange();
@@ -2235,6 +2240,31 @@
 
   setSecurityOrigin(SecurityOrigin::createUnique());
   didUpdateSecurityOrigin();
+}
+
+bool Document::dirtyElementsForLayerUpdate() {
+  if (m_layerUpdateSVGFilterElements.isEmpty())
+    return false;
+
+  for (Element* element : m_layerUpdateSVGFilterElements)
+    element->setNeedsStyleRecalc(LocalStyleChange,
+                                 StyleChangeReasonForTracing::create(
+                                     StyleChangeReason::SVGFilterLayerUpdate));
+  m_layerUpdateSVGFilterElements.clear();
+  return true;
+}
+
+void Document::scheduleSVGFilterLayerUpdateHack(Element& element) {
+  if (element.getStyleChangeType() == NeedsReattachStyleChange)
+    return;
+  element.setSVGFilterNeedsLayerUpdate();
+  m_layerUpdateSVGFilterElements.add(&element);
+  scheduleLayoutTreeUpdateIfNeeded();
+}
+
+void Document::unscheduleSVGFilterLayerUpdateHack(Element& element) {
+  element.clearSVGFilterNeedsLayerUpdate();
+  m_layerUpdateSVGFilterElements.remove(&element);
 }
 
 void Document::scheduleUseShadowTreeUpdate(SVGUseElement& element) {
@@ -6385,6 +6415,7 @@
   visitor->trace(m_customElementMicrotaskRunQueue);
   visitor->trace(m_elementDataCache);
   visitor->trace(m_useElementsNeedingUpdate);
+  visitor->trace(m_layerUpdateSVGFilterElements);
   visitor->trace(m_timers);
   visitor->trace(m_templateDocument);
   visitor->trace(m_templateDocumentHost);