Add new package: java.util.function

Bug: 26814204
Change-Id: I32afbbc0124bdf4fcec8589e4e42f62051154110
diff --git a/core/tasks/check_boot_jars/package_whitelist.txt b/core/tasks/check_boot_jars/package_whitelist.txt
index 48fa4a1..3a1ca23 100644
--- a/core/tasks/check_boot_jars/package_whitelist.txt
+++ b/core/tasks/check_boot_jars/package_whitelist.txt
@@ -32,6 +32,7 @@
 java\.util\.concurrent
 java\.util\.concurrent\.atomic
 java\.util\.concurrent\.locks
+java\.util\.function
 java\.util\.jar
 java\.util\.logging
 java\.util\.prefs