Fixing up a number of go.sh warnings

tools/dom/scripts/htmleventgenerator.py

Index: tools/dom/scripts/htmleventgenerator.py
diff --git a/tools/dom/scripts/htmleventgenerator.py b/tools/dom/scripts/htmleventgenerator.py
index 64063b3d2db8bf77d3cde249c8a0d91325a3278e..7f64f1bcf2c07fd7f806de12f51c0b95d1b1b4e5 100644
--- a/tools/dom/scripts/htmleventgenerator.py
+++ b/tools/dom/scripts/htmleventgenerator.py
@@ -161,16 +161,16 @@ _html_event_types = monitored.Dict('htmleventgenerator._html_event_types', {
   'Notification.close': ('close', 'Event'),
   'Notification.display': ('display', 'Event'),
   'Notification.show': ('show', 'Event'),
+  'RTCDTMFSender.tonechange': ('toneChange', 'RtcDtmfToneChangeEvent'),
   'RTCDataChannel.close': ('close', 'Event'),
   'RTCDataChannel.open': ('open', 'Event'),
   'RTCPeerConnection.addstream': ('addStream', 'MediaStreamEvent'),
   'RTCPeerConnection.datachannel': ('dataChannel', 'RtcDataChannelEvent'),
   'RTCPeerConnection.icecandidate': ('iceCandidate', 'RtcIceCandidateEvent'),
-  'RTCPeerConnection.icechange': ('iceChange', 'Event'),
-  'RTCPeerConnection.gatheringchange': ('gatheringChange', 'Event'),
+  'RTCPeerConnection.iceconnectionstatechange': ('iceConnectionStateChange', 'Event'),
   'RTCPeerConnection.negotiationneeded': ('negotiationNeeded', 'Event'),
   'RTCPeerConnection.removestream': ('removeStream', 'MediaStreamEvent'),
-  'RTCPeerConnection.statechange': ('stateChange', 'Event'),
+  'RTCPeerConnection.signalingstatechange': ('signalingStateChange', 'Event'),
   'SharedWorkerContext.connect': ('connect', 'Event'),
   'SpeechRecognition.audioend': ('audioEnd', 'Event'),
   'SpeechRecognition.audiostart': ('audioStart', 'Event'),