Remove redundant calls to HTMLSelectElement::setRecalcListItems().

third_party/WebKit/Source/core/html/HTMLHRElement.h

Index: third_party/WebKit/Source/core/html/HTMLHRElement.h
diff --git a/third_party/WebKit/Source/core/html/HTMLHRElement.h b/third_party/WebKit/Source/core/html/HTMLHRElement.h
index 9a841b46c7079bfdc17abb19c59a612ab9d6e2e6..5531b931fcb616cd38964c2429452f2135b92008 100644
--- a/third_party/WebKit/Source/core/html/HTMLHRElement.h
+++ b/third_party/WebKit/Source/core/html/HTMLHRElement.h
@@ -27,6 +27,8 @@
 
 namespace blink {
 
+class HTMLSelectElement;
+
 class HTMLHRElement final : public HTMLElement {
     DEFINE_WRAPPERTYPEINFO();
 public:
@@ -36,9 +38,12 @@ public:
 
 private:
     explicit HTMLHRElement(Document&);
+    HTMLSelectElement* ownerSelectElement() const;
 
     bool isPresentationAttribute(const QualifiedName&) const override;
     void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) override;
+    InsertionNotificationRequest insertedInto(ContainerNode*) override;
+    void removedFrom(ContainerNode*) override;
 };
 
 } // namespace blink