DOM-based SVG resource tracking

third_party/WebKit/Source/core/layout/svg/SVGResources.h

Index: third_party/WebKit/Source/core/layout/svg/SVGResources.h
diff --git a/third_party/WebKit/Source/core/layout/svg/SVGResources.h b/third_party/WebKit/Source/core/layout/svg/SVGResources.h
index 276203ba2e8c9be1ead007d3ea33454fb8922c7c..9773a42abd1ef7d69b24c96b4cd382c78a446ef9 100644
--- a/third_party/WebKit/Source/core/layout/svg/SVGResources.h
+++ b/third_party/WebKit/Source/core/layout/svg/SVGResources.h
@@ -29,6 +29,7 @@
 namespace blink {
 
 class ComputedStyle;
+class Element;
 class LayoutObject;
 class LayoutSVGResourceClipper;
 class LayoutSVGResourceContainer;
@@ -48,6 +49,10 @@ class SVGResources {
 
   static std::unique_ptr<SVGResources> BuildResources(const LayoutObject*,
                                                       const ComputedStyle&);
+
+  static void RemoveWatchesForElement(Element&);
+  static void RemoveUnreferencedResources(const LayoutObject&);
+
   void LayoutIfNeeded();
 
   static bool SupportsMarkers(const SVGElement&);