Auto merge of #14631 - ConnorGBrewster:datetime_fix, r=Ms2ger

Make datetime just reflect

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This just uses `make_getter!` for `datetime` rather than checking if `datetime` has data and falling back to the child data if `datetime` has no data.

I reverted 2 of the test changes and added back an old test that makes sure that child content is not returned when `datetime` is empty.

---
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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 #14611 (github issue number if applicable).

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- [X] There are tests for these changes OR
- [ ] These changes do not require tests because _____

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1 files changed, 1 insertions, 15 deletions

diff --git a/components/script/dom/htmltimeelement.rs b/components/script/dom/htmltimeelement.rs
index 84794443e02..c5286dd685f 100644
--- a/components/script/dom/htmltimeelement.rs
+++ b/components/script/dom/htmltimeelement.rs
@@ -2,14 +2,11 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-use dom::bindings::codegen::Bindings::ElementBinding::ElementBinding::ElementMethods;
 use dom::bindings::codegen::Bindings::HTMLTimeElementBinding;
 use dom::bindings::codegen::Bindings::HTMLTimeElementBinding::HTMLTimeElementMethods;
-use dom::bindings::inheritance::Castable;
 use dom::bindings::js::Root;
 use dom::bindings::str::DOMString;
 use dom::document::Document;
-use dom::element::Element;
 use dom::htmlelement::HTMLElement;
 use dom::node::Node;
 use html5ever_atoms::LocalName;
@@ -38,18 +35,7 @@ impl HTMLTimeElement {
 
 impl HTMLTimeElementMethods for HTMLTimeElement {
     // https://html.spec.whatwg.org/multipage/#dom-time-datetime
-    //make_getter!(DateTime, "datetime");
-    fn DateTime(&self) -> DOMString {
-        let element = self.upcast::<Element>();
-        if element.has_attribute(&local_name!("datetime")) {
-            return element.get_string_attribute(&local_name!("datetime"))
-        } else {
-            match element.GetInnerHTML() {
-                Ok(x) => x,
-                _ => DOMString::new(),
-            }
-        }
-    }
+    make_getter!(DateTime, "datetime");
 
     // https://html.spec.whatwg.org/multipage/#dom-time-datetime
     make_setter!(SetDateTime, "datetime");