policy: Replace base::MakeUnique with std::make_unique

Bug: 755727
Change-Id: I40c12783a9fdadbb693c87282b86bc11bcbcd106
Reviewed-on: https://chromium-review.googlesource.com/846582
Reviewed-by: Maksim Ivanov <emaxx@chromium.org>
Commit-Queue: Jinho Bang <jinho.bang@samsung.com>
Cr-Commit-Position: refs/heads/master@{#526423}

CrOS-Libchrome-Original-Commit: 17610a4d9347c0270f92dd0e0b623d5407421668
19 files changed
tree: 8302e216d45d3e3b3ae90ceb5111e79212ac6d90
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/