Sync-back BUILD file change to gerrit

Change-Id: Ic26769a72613df261dda868005ad823d38aeb49e
diff --git a/user/BUILD b/user/BUILD
index 2752dc3..326af2d 100644
--- a/user/BUILD
+++ b/user/BUILD
@@ -483,6 +483,7 @@
         "src/com/google/gwt/core/shared/GwtIncompatible.java",
     ],
     constraints = [
+        "android",
         "gwt",
         "public",
     ],