Generate a NULL ICE candidate after ice gathering is completed.

BUG=http://code.google.com/p/webrtc/issues/detail?id=1393

Review URL: https://chromiumcodereview.appspot.com/12254035

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@182787 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 11 insertions, 1 deletions

diff --git a/content/renderer/media/rtc_peer_connection_handler.cc b/content/renderer/media/rtc_peer_connection_handler.cc
index 75f6d5f..0841139 100644
--- a/content/renderer/media/rtc_peer_connection_handler.cc
+++ b/content/renderer/media/rtc_peer_connection_handler.cc
@@ -662,9 +662,19 @@ void RTCPeerConnectionHandler::OnIceConnectionChange(
 // Called any time the IceGatheringState changes
 void RTCPeerConnectionHandler::OnIceGatheringChange(
     webrtc::PeerConnectionInterface::IceGatheringState new_state) {
+  if (new_state == webrtc::PeerConnectionInterface::kIceGatheringComplete) {
+    // If ICE gathering is completed, generate a NULL ICE candidate,
+    // to signal end of candidates.
+    WebKit::WebRTCICECandidate null_candidate;
+    client_->didGenerateICECandidate(null_candidate);
+    // Adding ice complete state to the tracker.
+    if (peer_connection_tracker_) {
+      peer_connection_tracker_->TrackOnIceComplete(this);
+    }
+  }
+
   WebKit::WebRTCPeerConnectionHandlerClient::ICEGatheringState state =
       GetWebKitIceGatheringState(new_state);
-  // TODO(perkj): Add new ice gathering state to the tracker.
   client_->didChangeICEGatheringState(state);
 }