Sync internal master and AOSP sepolicy.

Bug: 37916906
Test: Builds 'n' boots.
Change-Id: Ia1d86264446ebecc1ca79f32f11354921bc77668
Merged-In: I208ec6a864127a059fb389417a9c6b259d7474cb
diff --git a/prebuilts/api/26.0/public/ephemeral_app.te b/prebuilts/api/26.0/public/ephemeral_app.te
new file mode 100644
index 0000000..dc39a22
--- /dev/null
+++ b/prebuilts/api/26.0/public/ephemeral_app.te
@@ -0,0 +1,14 @@
+###
+### Ephemeral apps.
+###
+### This file defines the security policy for apps with the ephemeral
+### feature.
+###
+### The ephemeral_app domain is a reduced permissions sandbox allowing
+### ephemeral applications to be safely installed and run. Non ephemeral
+### applications may also opt-in to ephemeral to take advantage of the
+### additional security features.
+###
+### PackageManager flags an app as ephemeral at install time.
+
+type ephemeral_app, domain;