tree 887644f8cd43bfeef2ffea81c6b6bd42f8d24056
parent f0e2811092c8853038f3419a76a469aeab986356
author Jiachen Zhao <zhaojiac@google.com> 1522448666 -0700
committer Jiachen Zhao <zhaojiac@google.com> 1522543521 -0700

Create the SystemUpdate activity class.

Test: tested sample app with sideloading.

Change-Id: I0d1661cea57c706b4981a4cda9f9b69fdeb69292