Bug 1155923 - Fix WPT unexpected-passes. r=bustage CLOSED TREE

--HG--
extra : commitid : B3luhK5Cw5

testing/web-platform/meta/webrtc/rtcpeerconnection/rtcpeerconnection-idl.html.ini

@@ -145,13 +145,13 @@
     expected: FAIL
 
   [RTCPeerConnection interface: existence and properties of interface object]
-    expected: FAIL
+    expected: PASS
 
   [RTCPeerConnection interface object length]
-    expected: FAIL
+    expected: PASS
 
   [RTCPeerConnection interface: existence and properties of interface prototype object]
-    expected: FAIL
+    expected: PASS
 
   [RTCPeerConnection interface: operation createOffer(RTCOfferOptions)]
     expected: FAIL
@@ -220,7 +220,7 @@
     expected: FAIL
 
   [Stringification of pc]
-    expected: FAIL
+    expected: PASS
 
   [RTCPeerConnection interface: calling setLocalDescription(RTCSessionDescription) on pc with too few arguments must throw TypeError]
     expected: FAIL
@@ -283,7 +283,7 @@
     expected: FAIL
 
   [RTCPeerConnection interface: calling getStats(MediaStreamTrack,RTCStatsCallback,RTCPeerConnectionErrorCallback) on pc with too few arguments must throw TypeError]
-    expected: FAIL
+    expected: PASS
 
   [RTCPeerConnection interface: pc must inherit property "peerIdentity" with the proper type (35)]
     expected: FAIL