tree a4239e919de5447a4eeb7fd2727f70a8f46c3375
parent 1f19dccb115cf608104b1cb0d192a53ae32f238f
author Alex Deymo <deymo@google.com> 1454522042 -0800
committer Alex Deymo <deymo@google.com> 1454561567 -0800

Allow null SystemState in the DownloadAction.

The SystemState is only defined in the libupdate_engine library, so
it may not be defined for other users of libpayload_consumer. This
patch allows to pass a nullptr for the SystemState while explicitly
passing the other classes defined in libpayload_consumer upon
construction.

Bug: None
TEST=FEATURES=test emerge-link update_engine
TEST=`mmma system/update_engine` on aosp_arm-eng and edison-eng

Change-Id: I535d0184a85e0a167ac65875f6e7c07832efbf40