Bug 1864657 [wpt PR 43153] - WebKit export of https://bugs.webkit.org…

…/show_bug.cgi?id=260225, a=testonly

Automatic update from web-platform-tests
WebKit export of https://bugs.webkit.org/show_bug.cgi?id=260225 (#43153)

* WebKit export of https://bugs.webkit.org/show_bug.cgi?id=260225
--

wpt-commits: 2ff8cd855638352f565ece0e6ea183772691b497
wpt-pr: 43153

UltraBlame original commit: d79c2dafea368ec09df44d7e85e3a00dc097964e

testing/web-platform/tests/webrtc/RTCPeerConnection-GC.https.html

@@ -21,8 +21,11 @@
   ctx.fillStyle = "blue";
   const drawCanvas = () => {
     ctx.fillRect(0, 0, canvas.width, canvas.height);
+    t.step_timeout(drawCanvas, 50);
   };
 
+  drawCanvas();
+
   let pc1 = new RTCPeerConnection();
   let pc2 = new RTCPeerConnection();
 
@@ -32,6 +35,7 @@
 
   const destVideo = document.createElement('video');
   destVideo.autoplay = true;
+  destVideo.muted = true;
   const onVideoChange = async () => {
     const start = performance.now();
     const width = destVideo.videoWidth;
@@ -41,10 +45,9 @@
       if (performance.now() - start > 5000) {
         throw new Error("Timeout waiting for video size change");
       }
-      drawCanvas();
       await Promise.race([
         resizeEvent,
-        new Promise(r => requestAnimationFrame(r)),
+        new Promise(r => t.step_timeout(r, 50)),
       ]);
     }
   };
@@ -69,7 +72,7 @@
   destVideo.srcObject = new MediaStream([(await haveTrackEvent).track]);
 
   // Wait for video on the other side.
-  await onVideoChange();
+  await destVideo.play();
   const color = getVideoSignal(destVideo);
   assert_not_equals(color, 0);