tree fc1df6324d76abf43408570327ae08955c5ae966
parent a97d6e36d5e3902d52d258ec0ec76d21c481ffed
author Yabin Cui <yabinc@google.com> 1541197333 -0700
committer Yabin Cui <yabinc@google.com> 1541547119 -0800

run-as: add ":fromRunAs" selector in seinfo.

It notifies libselinux that the setcontext request is from run-as.
And libselinux will set current process to runas_app domain, which
can execute app data files.

Bug: 118737210
Test: run CtsSimpleperfTestCases.
Change-Id: Ib94087f910786dd5d2a2b2e3b1bf76dfa7131ced