Add missing mms_config key enableGroupMms to SmsManager (1/2)

b/17390011

Change-Id: I6bef36521de6cd1644f83a667753542313fa8d8b
diff --git a/api/current.txt b/api/current.txt
index a69a8e5..81291e1 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -28888,6 +28888,7 @@
     field public static final java.lang.String MMS_CONFIG_ALLOW_ATTACH_AUDIO = "allowAttachAudio";
     field public static final java.lang.String MMS_CONFIG_APPEND_TRANSACTION_ID = "enabledTransID";
     field public static final java.lang.String MMS_CONFIG_EMAIL_GATEWAY_NUMBER = "emailGatewayNumber";
+    field public static final java.lang.String MMS_CONFIG_GROUP_MMS_ENABLED = "enableGroupMms";
     field public static final java.lang.String MMS_CONFIG_HTTP_PARAMS = "httpParams";
     field public static final java.lang.String MMS_CONFIG_HTTP_SOCKET_TIMEOUT = "httpSocketTimeout";
     field public static final java.lang.String MMS_CONFIG_MAX_IMAGE_HEIGHT = "maxImageHeight";