Tracking filter mutation via SVGElementProxy

third_party/WebKit/Source/core/paint/PaintLayerFilterInfo.cpp

Index: third_party/WebKit/Source/core/paint/PaintLayerFilterInfo.cpp
diff --git a/third_party/WebKit/Source/core/paint/PaintLayerFilterInfo.cpp b/third_party/WebKit/Source/core/paint/PaintLayerFilterInfo.cpp
index b2334a401e695d71a91f10ede4e37182aba8bdd4..2fc627e1f91f3bc1bddf0cf12c65386183a057ef 100644
--- a/third_party/WebKit/Source/core/paint/PaintLayerFilterInfo.cpp
+++ b/third_party/WebKit/Source/core/paint/PaintLayerFilterInfo.cpp
@@ -29,8 +29,8 @@
 
 #include "core/paint/PaintLayerFilterInfo.h"
 
+#include "core/dom/StyleChangeReason.h"
 #include "core/paint/PaintLayer.h"
-#include "core/style/FilterOperations.h"
 #include "platform/graphics/filters/FilterEffect.h"
 
 namespace blink {
@@ -42,19 +42,30 @@ PaintLayerFilterInfo::~PaintLayerFilterInfo() {
   DCHECK(!m_layer);
 }
 
+void PaintLayerFilterInfo::resourceContentChanged(SVGElementProxy*) {
+  DCHECK(m_layer);
+  m_layer->layoutObject()->setShouldDoFullPaintInvalidation();
+  invalidateFilterChain();
+}
+
+void PaintLayerFilterInfo::resourceReferenceChanged(SVGElementProxy*) {
+  DCHECK(m_layer);
+  Node* node = m_layer->enclosingNode();
+  node->setNeedsStyleRecalc(LocalStyleChange,
+                            StyleChangeReasonForTracing::create(
+                                StyleChangeReason::SVGResourceChange));
+}
+
 void PaintLayerFilterInfo::setLastEffect(FilterEffect* lastEffect) {
   m_lastEffect = lastEffect;
 }
 
-void PaintLayerFilterInfo::updateReferenceFilterClients(
-    const FilterOperations& operations) {
-  clearFilterReferences();
-  addFilterReferences(operations, m_layer->layoutObject()->document());
+FilterEffect* PaintLayerFilterInfo::lastEffect() const {
+  return m_lastEffect;
 }
 
-void PaintLayerFilterInfo::filterNeedsInvalidation() {
-  if (m_layer)
-    m_layer->filterNeedsPaintInvalidation();
+void PaintLayerFilterInfo::invalidateFilterChain() {
+  m_lastEffect = nullptr;
 }
 
 DEFINE_TRACE(PaintLayerFilterInfo) {