Rename CONTACT_METADATA_SYNC GService Flag.

Rename it to CONTACT_METADATA_SYNC_ENABLED.

BUG 28295805

Change-Id: Ib1f735b082a2ff6cca93e377b3eaaaf7cd396b8d
diff --git a/api/test-removed.txt b/api/test-removed.txt
index f9fce40..18cc33a 100644
--- a/api/test-removed.txt
+++ b/api/test-removed.txt
@@ -356,6 +356,10 @@
     field public static final deprecated java.lang.String TIMESTAMP = "timestamp";
   }
 
+  public static final class Settings.Global extends android.provider.Settings.NameValueTable {
+    field public static final deprecated java.lang.String CONTACT_METADATA_SYNC = "contact_metadata_sync";
+  }
+
   public static final class Settings.System extends android.provider.Settings.NameValueTable {
     field public static final java.lang.String APPEND_FOR_LAST_AUDIBLE = "_last_audible";
     field public static final java.lang.String VOLUME_ALARM = "volume_alarm";