Allow return type deduction per discussion thread.

BUG=none
TEST=none

Change-Id: I7bf9deba405fa33397c48d6f9e8e3340646c95a4
Reviewed-on: https://chromium-review.googlesource.com/855818
Commit-Queue: Peter Kasting <[email protected]>
Reviewed-by: Nico Weber <[email protected]>
Cr-Commit-Position: refs/heads/master@{#547369}
3 files changed