Implement HTMLScriptElement async attribute

components/script/dom/htmlscriptelement.rs

@@ -685,6 +685,17 @@ impl HTMLScriptElementMethods for HTMLScriptElement {
     // https://html.spec.whatwg.org/multipage/#dom-script-charset
     make_setter!(SetCharset, "charset");
 
+    // https://html.spec.whatwg.org/multipage/#dom-script-async
+    fn Async(&self) -> bool {
+        self.non_blocking.get() || self.upcast::<Element>().has_attribute(&local_name!("async"))
+    }
+
+    // https://html.spec.whatwg.org/multipage/#dom-script-async
+    fn SetAsync(&self, value: bool) {
+        self.non_blocking.set(false);
+        self.upcast::<Element>().set_bool_attribute(&local_name!("async"), value);
+    }
+
     // https://html.spec.whatwg.org/multipage/#dom-script-defer
     make_bool_getter!(Defer, "defer");
     // https://html.spec.whatwg.org/multipage/#dom-script-defer

components/script/dom/webidls/HTMLScriptElement.webidl

@@ -7,7 +7,7 @@ interface HTMLScriptElement : HTMLElement {
            attribute DOMString src;
            attribute DOMString type;
            attribute DOMString charset;
-  //         attribute boolean async;
+           attribute boolean async;
            attribute boolean defer;
            attribute DOMString? crossOrigin;
            [Pure]

tests/wpt/metadata/html/browsers/windows/noreferrer.html.ini

@@ -1,5 +1,3 @@
 [noreferrer.html]
   type: testharness
   disabled: https://github.com/servo/servo/issues/13400
-  
-

tests/wpt/metadata/html/dom/interfaces.html.ini

@@ -3855,12 +3855,6 @@
   [HTMLDialogElement interface: operation showModal([object Object\],[object Object\])]
     expected: FAIL
 
-  [HTMLScriptElement interface: attribute async]
-    expected: FAIL
-
-  [HTMLScriptElement interface: document.createElement("script") must inherit property "async" with the proper type (3)]
-    expected: FAIL
-
   [HTMLCanvasElement interface: operation probablySupportsContext(DOMString,any)]
     expected: FAIL
 

tests/wpt/metadata/html/semantics/scripting-1/the-script-element/async_001.htm.ini

@@ -1,5 +0,0 @@
-[async_001.htm]
-  type: testharness
-  [Async property on a dynamically-created script is true by default]
-    expected: FAIL
-

tests/wpt/metadata/html/semantics/scripting-1/the-script-element/async_002.htm.ini

@@ -1,5 +0,0 @@
-[async_002.htm]
-  type: testharness
-  [Test 'async' attribute are reflected in the async property with setAttribute]
-    expected: FAIL
-

tests/wpt/metadata/html/semantics/scripting-1/the-script-element/async_007.htm.ini

@@ -1,5 +0,0 @@
-[async_007.htm]
-  type: testharness
-  [Ordered async script execution when script.async == false]
-    expected: FAIL
-

tests/wpt/metadata/html/semantics/scripting-1/the-script-element/async_010.htm.ini

@@ -1,5 +0,0 @@
-[async_010.htm]
-  type: testharness
-  [Removing an async script before execution]
-    expected: FAIL
-

tests/wpt/metadata/html/semantics/scripting-1/the-script-element/async_011.htm.ini

@@ -1,5 +0,0 @@
-[async_011.htm]
-  type: testharness
-  [An empty parser-inserted script element should return async=true]
-    expected: FAIL
-

tests/wpt/metadata/old-tests/submission/Opera/script_scheduling/091.html.ini

@@ -1,5 +0,0 @@
-[091.html]
-  type: testharness
-  [ scheduler: force-async off on non-parser-inserted script]
-    expected: FAIL
-

tests/wpt/metadata/old-tests/submission/Opera/script_scheduling/105.html.ini

@@ -1,5 +0,0 @@
-[105.html]
-  type: testharness
-  [ scheduler: adding async attribute at runtime]
-    expected: FAIL
-

tests/wpt/metadata/old-tests/submission/Opera/script_scheduling/122.html.ini

@@ -1,5 +0,0 @@
-[122.html]
-  type: testharness
-  [Reinserted script async IDL attribute]
-    expected: FAIL
-

tests/wpt/metadata/old-tests/submission/Opera/script_scheduling/123.html.ini

@@ -1,5 +0,0 @@
-[123.html]
-  type: testharness
-  [scheduler: altering the type attribute and adding/removing external script with async=false ]
-    expected: FAIL
-

tests/wpt/metadata/old-tests/submission/Opera/script_scheduling/126.html.ini

@@ -1,5 +0,0 @@
-[126.html]
-  type: testharness
-  [scheduler: altering the type attribute and changing script data external script async=false ]
-    expected: FAIL
-