Track libcore change 5731615b4d705b5af63a3126d84b8786862477d.

bug: 26689841
Change-Id: I463543c67cc525583d1fd6f7031a0d38f543d8a2
(cherry picked from commit 64aebdc02b36c1ed4caa618b1d95e726f8823ac1)
2 files changed