Enable generation of local host candidate.

LayoutTests/fast/mediastream/RTCPeerConnection.html

Index: LayoutTests/fast/mediastream/RTCPeerConnection.html
diff --git a/LayoutTests/fast/mediastream/RTCPeerConnection.html b/LayoutTests/fast/mediastream/RTCPeerConnection.html
index 74e2e4c89dca2fbb2d3bb65476f52a73c370abfc..6628200fd612a5db400619d9534cb5f7a32a8307 100644
--- a/LayoutTests/fast/mediastream/RTCPeerConnection.html
+++ b/LayoutTests/fast/mediastream/RTCPeerConnection.html
@@ -21,8 +21,12 @@ shouldNotThrow("new webkitRTCPeerConnection({iceServers:[{url:'turn:foo.com', cr
 shouldNotThrow("new webkitRTCPeerConnection({iceServers:[{url:'turn:foo.com', credential:'x'},{url:'stun:bar.com'}]}, null);");
 shouldNotThrow("new webkitRTCPeerConnection({iceServers:[{urls:'stun:foo.com'}]}, null);");
 shouldNotThrow("new webkitRTCPeerConnection({iceServers:[{urls:['stun:foo.com', 'turn:foo.com']}]}, null);");
+shouldNotThrow("new webkitRTCPeerConnection({fooServers:[], iceServers:[{urls:['stun:foo.com', 'turn:foo.com']}]}, null);");

[pthatcher2, 2015/09/16 04:09:58]

Why bother having fooServers?

[guoweis_left_chromium, 2015/09/16 17:29:05]

There are existing tests using "fooServers" which expects exception. The reason
for that was iceServers was missing. "iceServers" was mandate but not anymore.

+shouldNotThrow("new webkitRTCPeerConnection({iceServers:undefined}, null);");
+shouldNotThrow("new webkitRTCPeerConnection({}, null);");
+shouldThrow("new webkitRTCPeerConnection({iceServers:null}, null);");
 
-shouldThrow("new webkitRTCPeerConnection({fooServers:[]}, null);");
+shouldNotThrow("new webkitRTCPeerConnection({fooServers:[]}, null);");

[pthatcher2, 2015/09/16 04:09:58]

What does this test buy us over {}?  In other words, why bother having
fooServers?

[guoweis_left_chromium, 2015/09/16 17:29:05]

Done.

 shouldThrow("new webkitRTCPeerConnection({iceServers:true}, null);");
 shouldThrow("new webkitRTCPeerConnection({iceServers:[1, 2, 3]}, null);");
 shouldThrow("new webkitRTCPeerConnection({iceServers:[{}]}, null);");