add the deleted flag to the Groups table

core/java/android/provider/ContactsContract.java

diff --git a/core/java/android/provider/ContactsContract.java b/core/java/android/provider/ContactsContract.java
index 9b0c70e..8651b4d 100644
--- a/core/java/android/provider/ContactsContract.java
+++ b/core/java/android/provider/ContactsContract.java
@@ -1401,6 +1401,17 @@
          * Type: INTEGER
          */
         public static final String GROUP_VISIBLE = "group_visible";
+
+        /**
+         * The "deleted" flag: "0" by default, "1" if the row has been marked
+         * for deletion. When {@link android.content.ContentResolver#delete} is
+         * called on a raw contact, it is marked for deletion and removed from its
+         * aggregate contact. The sync adaptor deletes the raw contact on the server and
+         * then calls ContactResolver.delete once more, this time passing the
+         * {@link RawContacts#DELETE_PERMANENTLY} query parameter to finalize the data removal.
+         * <P>Type: INTEGER</P>
+         */
+        public static final String DELETED = "deleted";
     }
 
     /**
@@ -1434,6 +1445,14 @@
          * The MIME type of a single group.
          */
         public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/group";
+
+        /**
+         * Query parameter that can be passed with the {@link #CONTENT_URI} URI
+         * to the {@link android.content.ContentResolver#delete} method to
+         * indicate that the raw contact can be deleted physically, rather than
+         * merely marked as deleted.
+         */
+        public static final String DELETE_PERMANENTLY = "delete_permanently";
     }
 
     /**