DOM-based SVG resource tracking

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

Index: third_party/WebKit/Source/core/layout/svg/SVGResourcesCache.h
diff --git a/third_party/WebKit/Source/core/layout/svg/SVGResourcesCache.h b/third_party/WebKit/Source/core/layout/svg/SVGResourcesCache.h
index 66ed2e85b9e71be90ac94bcdc8dfc6a4d0b2b8d1..ac7f3c8b9c0aa48451c15bbcf493ad0c074d639d 100644
--- a/third_party/WebKit/Source/core/layout/svg/SVGResourcesCache.h
+++ b/third_party/WebKit/Source/core/layout/svg/SVGResourcesCache.h
@@ -30,7 +30,6 @@ namespace blink {
 
 class LayoutObject;
 class ComputedStyle;
-class LayoutSVGResourceContainer;
 class SVGResources;
 
 class SVGResourcesCache {
@@ -62,6 +61,10 @@ class SVGResourcesCache {
                                  StyleDifference,
                                  const ComputedStyle& new_style);
 
+  // Called when the target element of a resource referenced by the
+  // LayoutObject may have changed.
+  static void ResourceReferenceChanged(LayoutObject&);
+
   class TemporaryStyleScope {
     WTF_MAKE_NONCOPYABLE(TemporaryStyleScope);
     STACK_ALLOCATED();