[empathy/gnome-3-6] Implement Google OAUTH2 authentication for GOA accounts

[Debarshi Ray <debarshir src gnome org>]

commit 46aaeb66354585be83d35693750072b7c6fd5494
Author: Giovanni Campagna <gcampagna src gnome org>
Date:   Sun Oct 28 13:25:07 2012 +0100

    Implement Google OAUTH2 authentication for GOA accounts
    
    GOA recently switched to OAuth2 for Google accounts, so we
    can use its credentials to access Google Talk without a password.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=652546

 libempathy/empathy-goa-auth-handler.c |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)
---
diff --git a/libempathy/empathy-goa-auth-handler.c b/libempathy/empathy-goa-auth-handler.c
index ddcde17..49fc962 100644
--- a/libempathy/empathy-goa-auth-handler.c
+++ b/libempathy/empathy-goa-auth-handler.c
@@ -182,6 +182,12 @@ got_oauth2_access_token_cb (GObject *source,
             auth_cb, data);
         break;
 
+      case EMPATHY_SASL_MECHANISM_GOOGLE:
+        empathy_sasl_auth_google_async (data->channel,
+            goa_account_get_identity (goa_object_peek_account (data->goa_object)),
+            access_token, auth_cb, data);
+        break;
+
       default:
         g_assert_not_reached ();
     }
@@ -351,5 +357,6 @@ empathy_goa_auth_handler_supports (EmpathyGoaAuthHandler *self,
 
   mech = empathy_sasl_channel_select_mechanism (channel);
   return mech == EMPATHY_SASL_MECHANISM_FACEBOOK ||
-      mech == EMPATHY_SASL_MECHANISM_WLM;
+      mech == EMPATHY_SASL_MECHANISM_WLM ||
+      mech == EMPATHY_SASL_MECHANISM_GOOGLE;
 }