Fix Javascript errors.

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 f185b92f602c605b1f68f3d3fa28b1b1eb091332..5b87f596dcf51d98f5a9390094c83edaa8f69977 100644
--- a/remoting/webapp/me2mom/viewer_plugin_proto.js
+++ b/remoting/webapp/me2mom/viewer_plugin_proto.js
@@ -32,6 +32,12 @@ remoting.ViewerPlugin.setScaleToFit = function(scale) {};
 /** @type {number} */ remoting.ViewerPlugin.STATUS_CLOSED;
 /** @type {number} */ remoting.ViewerPlugin.STATUS_FAILED;
 
+/** @type {number} */ remoting.ViewerPlugin.ERROR_NONE;
+/** @type {number} */ remoting.ViewerPlugin.ERROR_HOST_IS_OFFLINE;
+/** @type {number} */ remoting.ViewerPlugin.ERROR_SESSION_REJECTED;
+/** @type {number} */ remoting.ViewerPlugin.ERROR_INCOMPATIBLE_PROTOCOL;
+/** @type {number} */ remoting.ViewerPlugin.ERROR_NETWORK_FAILURE;
+
 /** @type {number} */ remoting.ViewerPlugin.videoBandwidth;
 /** @type {number} */ remoting.ViewerPlugin.videoCaptureLatency;
 /** @type {number} */ remoting.ViewerPlugin.videoEncodeLatency;