Add promise-based addIceCandidate, setLocalDescription and setRemoteDescription to RTCPeerConnection

third_party/WebKit/LayoutTests/fast/mediastream/RTCPeerConnection-ice-promise.html

Index: third_party/WebKit/LayoutTests/fast/mediastream/RTCPeerConnection-ice-promise.html
diff --git a/third_party/WebKit/LayoutTests/fast/mediastream/RTCPeerConnection-ice.html b/third_party/WebKit/LayoutTests/fast/mediastream/RTCPeerConnection-ice-promise.html
similarity index 66%
copy from third_party/WebKit/LayoutTests/fast/mediastream/RTCPeerConnection-ice.html
copy to third_party/WebKit/LayoutTests/fast/mediastream/RTCPeerConnection-ice-promise.html
index f144b9dacfd2914c80f0bf16aa68e458ad49eaf0..b89bbbe4e5ae798fcd1ff6d08cd76fe9ea22f374 100644
--- a/third_party/WebKit/LayoutTests/fast/mediastream/RTCPeerConnection-ice.html
+++ b/third_party/WebKit/LayoutTests/fast/mediastream/RTCPeerConnection-ice-promise.html
@@ -27,19 +27,30 @@ function addIceCandidateSuccess()
 
 function addIceCandidateFailure()
 {
-    testFailed("addIceCandidateFailue was called.");
+    testFailed("addIceCandidateFailure was called.");
     finishJSTest();
 }
 
+function unexpectedSuccess()
+{
+    testFailed("unexpectedSuccess was called.");
+    finishJSTest();
+}
+
+function expectedTypeError(error)
+{
+  window.error = error;
+  shouldBe('error.name', '"TypeError"')
+  testPassed('expectedTypeError was called.')
+}
+
 function onIceChange1()
 {
     if (pc.iceConnectionState === "completed") {
         testPassed("iceConnectionState is completed");
         iceCandidate = new RTCIceCandidate({candidate:"nano nano"});
-        shouldThrow('pc.addIceCandidate(null, addIceCandidateSuccess, addIceCandidateFailure);');
-        shouldThrow('pc.addIceCandidate(iceCandidate, null, addIceCandidateFailure);');
-        shouldThrow('pc.addIceCandidate(iceCandidate, addIceCandidateSuccess, null);');
-        shouldNotThrow('pc.addIceCandidate(iceCandidate, addIceCandidateSuccess, addIceCandidateFailure);');
+        shouldNotThrow('pc.addIceCandidate(null).then(unexpectedSuccess, expectedTypeError);');
+        shouldNotThrow('pc.addIceCandidate(iceCandidate).then(addIceCandidateSuccess, addIceCandidateFailure);');
     }
 }