Copy crash_dump from device to chroot.

The crash_dump binary and tombstoned running on the device share a
protocal format. So copy crash_dump from the device to the chroot to
ensure we get stack traces when ART crashes in the chroot.

Test: HelloWorld with a crash, see stack trace in logcat
Change-Id: I50bd7d2471c8322e895203c08184bd5262c3748f
1 file changed