Auto merge of #12620 - vrod:add-htmllielement-value, r=KiChjang

Implement HTMLLIElement#value

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- Add implementation of parse_plain_attribute from VirtualMethods trait for HTMLLIElement
- Add make_int_setter! macro
- Implement getter and setter for HTMLLIElement#value attribute
- Update test expectations for HTMLLIElement#value

---
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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix #12575
- [X] There are tests for these changes

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1 files changed, 4 insertions, 0 deletions

diff --git a/components/script/dom/virtualmethods.rs b/components/script/dom/virtualmethods.rs
index b42e8b676c3..d4cf1609568 100644
--- a/components/script/dom/virtualmethods.rs
+++ b/components/script/dom/virtualmethods.rs
@@ -29,6 +29,7 @@ use dom::htmliframeelement::HTMLIFrameElement;
 use dom::htmlimageelement::HTMLImageElement;
 use dom::htmlinputelement::HTMLInputElement;
 use dom::htmllabelelement::HTMLLabelElement;
+use dom::htmllielement::HTMLLIElement;
 use dom::htmllinkelement::HTMLLinkElement;
 use dom::htmlmediaelement::HTMLMediaElement;
 use dom::htmlmetaelement::HTMLMetaElement;
@@ -179,6 +180,9 @@ pub fn vtable_for(node: &Node) -> &VirtualMethods {
         NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLLabelElement)) => {
             node.downcast::<HTMLLabelElement>().unwrap() as &VirtualMethods
         }
+        NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLLIElement)) => {
+            node.downcast::<HTMLLIElement>().unwrap() as &VirtualMethods
+        }
         NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLLinkElement)) => {
             node.downcast::<HTMLLinkElement>().unwrap() as &VirtualMethods
         }