blink: PopState and NavigateEvent init + ship hasUAVisualTransition

html/browsers/browsing-the-web/history-traversal/PopStateEvent.html

@@ -23,16 +23,25 @@
   assert_equals(popStateEvent.state, null, "the PopStateEvent.state");
 }, "Initial value of PopStateEvent.state must be null");
 
+test(function () {
+  var popStateEvent = new PopStateEvent("popstate");
+  assert_false(popStateEvent.hasUAVisualTransition, "the PopStateEvent.hasUAVisualTransition");
+}, "Initial value of PopStateEvent.hasUAVisualTransition must be false");
+
 test(function () {
   var state = history.state;
   var data;
+  var hasUAVisualTransition = false;
   window.addEventListener('popstate', function (e) {
     data = e.state;
+    hasUAVisualTransition = e.hasUAVisualTransition;
   });
   window.dispatchEvent(new PopStateEvent('popstate', {
-    'state': {testdata:true}
+    'state': {testdata:true},
+    'hasUAVisualTransition': true
   }));
   assert_true(data.testdata,'state data was corrupted');
   assert_equals(history.state, state, "history.state was NOT set by dispatching the event");
+  assert_true(hasUAVisualTransition, 'hasUAVisualTransition not set correctly');
 }, 'Dispatching a synthetic PopStateEvent');
 </script>

navigation-api/navigate-event/event-constructor.html

@@ -49,6 +49,7 @@
     const formData = new FormData();
     const signal = (new AbortController()).signal;
     const downloadRequest = "abc";
+    const hasUAVisualTransition = true;
 
     const event = new NavigateEvent("navigate", {
       navigationType: "replace",
@@ -59,7 +60,8 @@
       signal,
       formData,
       downloadRequest,
-      info
+      info,
+      hasUAVisualTransition
     });
 
     assert_equals(event.navigationType, "replace");
@@ -71,6 +73,7 @@
     assert_equals(event.formData, formData);
     assert_equals(event.downloadRequest, downloadRequest);
     assert_equals(event.info, info);
+    assert_equals(event.hasUAVisualTransition, hasUAVisualTransition);
   });
   history.pushState(2, null, "#2");
 }, "all properties are reflected back");
@@ -93,4 +96,16 @@
   });
   history.pushState(3, null, "#3");
 }, "defaults are as expected");
+
+async_test(t => {
+  navigation.onnavigate = t.step_func_done(e => {
+    const event = new NavigateEvent("navigate", {
+      destination: e.destination,
+      signal: (new AbortController()).signal
+    });
+
+    assert_false(event.hasUAVisualTransition);
+  });
+  history.pushState(3, null, "#3");
+}, "hasUAVisualTransition is default false");
 </script>