Import Cobalt 19.master.0.188393

Includes the following patches:
  https://cobalt-review.googlesource.com/c/cobalt/+/4970
    by milko.leporis@mips.com
  https://cobalt-review.googlesource.com/c/cobalt/+/4990
    by z102.zhang@samsung.com

Change-Id: I9ac637c775da20fe2ddf4a1337b70c896cee4e27