Fix build break

Bug: 16852844
Change-Id: I227aab0afdf4a5a5cd5dc38e7af055b7a1b94729
(cherry picked from commit 9858af0ec68ad28db60047587c8eb6232b4a6591)
diff --git a/telecomm/java/android/telecom/ConnectionService.java b/telecomm/java/android/telecom/ConnectionService.java
index 5c15b4e..6eee99d 100644
--- a/telecomm/java/android/telecom/ConnectionService.java
+++ b/telecomm/java/android/telecom/ConnectionService.java
@@ -888,6 +888,8 @@
      * @param connectionManagerPhoneAccount
      * @param request
      * @return
+     *
+     * @hide
      */
     public Connection onCreateUnknownConnection(PhoneAccountHandle connectionManagerPhoneAccount,
             ConnectionRequest request) {