Track libcore change 2c423c81bfa731df2577a.

Also includes a regenerated test-current.txt.

bug: 27423298

(cherry picked from commit a1becdc6982d770737d6b56f974c4f5beb244076)

Change-Id: Iaa385947af79cee7b0fa1cde10d106411e2f67d2
3 files changed