update_engine: migrate from base::MakeUnique to std::make_unique
base::MakeUnique is being deprecated as we can now use std::make_unique
when compiling code in the C++14 mode.
BUG=chromium:769107
CQ-DEPEND=CL:669672
TEST=Run unit tests.
Change-Id: I82f76647239b1eb3b98b19f6479788ffd86ce756
Reviewed-on: https://chromium-review.googlesource.com/716826
Commit-Ready: Ben Chan <benchan@chromium.org>
Tested-by: Ben Chan <benchan@chromium.org>
Reviewed-by: Amin Hassani <ahassani@chromium.org>
Reviewed-by: Sen Jiang <senj@chromium.org>
12 files changed