Add in support for connecting with just the OAuth2 token. Default to OAuth2.

remoting/client/appengine/chromoting_session.html

Index: remoting/client/appengine/chromoting_session.html
diff --git a/remoting/client/appengine/chromoting_session.html b/remoting/client/appengine/chromoting_session.html
index 6197d6aed8bf52b602e8e61db690658ef3737b8d..4d999997647dcffc1d56d22816fec0eb6ae5f2e4 100644
--- a/remoting/client/appengine/chromoting_session.html
+++ b/remoting/client/appengine/chromoting_session.html
@@ -13,7 +13,7 @@ found in the LICENSE file.
     <!--
     // TODO(ajwong): Total Hack. We should be able to read the URL parameters
     // from JS, and also avoid passing in the connection tokens here.
-    document.xmppAuthToken="{{xmpp_token}}";
+    document.talkToken="{{talk_token}}";
     document.httpXmppProxy="{{http_xmpp_proxy}}";
     document.username="{{username}}";
     document.hostname="{{hostname}}";