Clean up client state callback.

remoting/webapp/me2mom/viewer_plugin_proto.js

Index: remoting/webapp/me2mom/viewer_plugin_proto.js
diff --git a/remoting/webapp/me2mom/viewer_plugin_proto.js b/remoting/webapp/me2mom/viewer_plugin_proto.js
index 39549945beba2204b797e9969127d909a19a0d04..d480d1710b3ed061183b8b9f7abab8067352739f 100644
--- a/remoting/webapp/me2mom/viewer_plugin_proto.js
+++ b/remoting/webapp/me2mom/viewer_plugin_proto.js
@@ -32,6 +32,9 @@ remoting.ViewerPlugin.prototype.releaseAllKeys = function() {};
 remoting.ViewerPlugin.prototype.connect =
     function(hostJid, hostPublicKey, clientJid, accessCode) {};
 
+/** @type {function(number, number): void} State change callback function. */
+remoting.ViewerPlugin.prototype.connectionInfoUpdate;
+
 /** @type {number} */ remoting.ViewerPlugin.prototype.apiMinVersion;
 /** @type {number} */ remoting.ViewerPlugin.prototype.apiVersion;