Portals: Fix postMessage calls in portals-focus.sub.html resources

Missed fixing these callsites in https://crrev.com/c/2386012.

Bug: 1126901
Change-Id: If94b71e0767bb222df3840185e7e00e515592fd2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2616459Reviewed-by: Jeremy Roman <jbroman@chromium.org>
Commit-Queue: Adithya Srinivasan <adithyas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#841619}

third_party/blink/web_tests/external/wpt/portals/resources/focus-page-with-button.html

@@ -4,7 +4,7 @@
     function handleMessage(e) {
       if (e.data == "focus") {
         let button = document.querySelector("button");
-        button.onfocus = () => e.source.postMessage({focused: true}, "*");
+        button.onfocus = () => e.source.postMessage({focused: true}, {targetOrigin: "*"});
         button.focus();
       }
     }
@@ -22,7 +22,7 @@
 
     window.onfocus = () => {
       if (window.portalHost)
-        window.portalHost.postMessage("window focused", "*");
+        window.portalHost.postMessage("window focused");
     };
   </script>
   <button>A</button>

third_party/blink/web_tests/external/wpt/portals/resources/focus-page-with-x-origin-iframe.sub.html

@@ -19,9 +19,9 @@
 
     window.onmessage = e => {
       if (window.portalHost)
-        window.portalHost.postMessage(e.data, "*");
+        window.portalHost.postMessage(e.data);
       else
-        document.querySelector("portal").postMessage(e.data, "*");
+        document.querySelector("portal").postMessage(e.data);
     }
   </script>
   <iframe src="http://{{hosts[alt][www]}}:{{ports[http][0]}}/portals/resources/focus-page-with-button.html"></iframe>