Wire in OAuth2 support into non-sandboxed connections in libjingle.

remoting/jingle_glue/jingle_client.cc

Index: remoting/jingle_glue/jingle_client.cc
diff --git a/remoting/jingle_glue/jingle_client.cc b/remoting/jingle_glue/jingle_client.cc
index ce117806bd394e150a86381a239be3b3c3b9be8f..509e6f8ebc8478673b2b2d2c37f52bf2e8663227 100644
--- a/remoting/jingle_glue/jingle_client.cc
+++ b/remoting/jingle_glue/jingle_client.cc
@@ -114,11 +114,16 @@ void XmppSignalStrategy::OnConnectionStateChanged(
 buzz::PreXmppAuth* XmppSignalStrategy::CreatePreXmppAuth(
     const buzz::XmppClientSettings& settings) {
   buzz::Jid jid(settings.user(), settings.host(), buzz::STR_EMPTY);
+  std::string mechanism = notifier::GaiaTokenPreXmppAuth::kDefaultAuthMechanism;
+  if (settings.token_service() == "oauth2") {
+    mechanism = "X-OAUTH2";
+  }
+
   return new notifier::GaiaTokenPreXmppAuth(
       jid.Str(),
       settings.auth_cookie(),
       settings.token_service(),
-      notifier::GaiaTokenPreXmppAuth::kDefaultAuthMechanism);
+      mechanism);
 }