Merge "Make libsigchain a regular shared library dependency of app_process." am: 2fea6f3f77 am: 5040afaa3e am: 07618a5539

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1621159

Change-Id: Ide62fa6706d8d473f00372864e989c8579d3bf44