webrtc wpt: add addIceCandidate(new RTCIceCandidate({candidate, sdpMi…

…d})) test

which should have caught the bug

BUG=965483

Change-Id: I379f14ee625a9f43889d778b9774bb04949c73af
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1628722
Reviewed-by: Guido Urdaneta <guidou@chromium.org>
Commit-Queue: Philipp Hancke <philipp.hancke@googlemail.com>
Cr-Commit-Position: refs/heads/master@{#663512}

webrtc/RTCPeerConnection-addIceCandidate.html

@@ -263,6 +263,17 @@
         sdpMid: sdpMid1 }));
   }, 'Add candidate with only valid sdpMid should succeed');
 
+  promise_test(t => {
+    const pc = new RTCPeerConnection();
+
+    t.add_cleanup(() => pc.close());
+
+    return pc.setRemoteDescription(sessionDesc)
+      .then(() => pc.addIceCandidate(new RTCIceCandidate({
+        candidate: candidateStr1,
+        sdpMid: sdpMid1 })));
+  }, 'Add candidate with only valid sdpMid and RTCIceCandidate should succeed');
+
   promise_test(t => {
     const pc = new RTCPeerConnection();