Infrastructure to support package verifier

Allow a package verifier to approve or disapprove of a package being
installed.

Change-Id: Ibfea0f2b1aaa4ab1589a4e59f96144702b9bf94b
diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index f8702b9..de06f20 100644
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -3960,6 +3960,12 @@
         public static final String WEB_AUTOFILL_QUERY_URL =
             "web_autofill_query_url";
 
+        /** Whether package verification is enabled. {@hide} */
+        public static final String PACKAGE_VERIFIER_ENABLE = "verifier_enable";
+
+        /** Timeout for package verification. {@hide} */
+        public static final String PACKAGE_VERIFIER_TIMEOUT = "verifier_timeout";
+
         /**
          * @hide
          */