Remove unused methods in SVGListPropertyHelper and SVGPropertyTearOff*

third_party/WebKit/Source/core/svg/properties/SVGListPropertyHelper.h

Index: third_party/WebKit/Source/core/svg/properties/SVGListPropertyHelper.h
diff --git a/third_party/WebKit/Source/core/svg/properties/SVGListPropertyHelper.h b/third_party/WebKit/Source/core/svg/properties/SVGListPropertyHelper.h
index 072979f7d97a3c3e4f49fad2daa81d41b3e631b2..22f2279efa4b33cb2ec7095f5c4904b5a84ad176 100644
--- a/third_party/WebKit/Source/core/svg/properties/SVGListPropertyHelper.h
+++ b/third_party/WebKit/Source/core/svg/properties/SVGListPropertyHelper.h
@@ -91,11 +91,6 @@ class SVGListPropertyHelper : public SVGPropertyHelper<Derived> {
   };
 
   ConstIterator begin() const { return ConstIterator(values_.begin()); }
-
-  ConstIterator LastAppended() const {
-    return ConstIterator(values_.begin() + values_.size() - 1);
-  }
-
   ConstIterator end() const { return ConstIterator(values_.end()); }
 
   void Append(ItemPropertyType* new_item) {