Make callers of FromUTC(Local)Exploded in third_party/ use new time API.

Use new time conversion API in accordance with
https://codereview.chromium.org/1988663002/

BUG=601905

Review-Url: https://codereview.chromium.org/2091673002
Cr-Original-Commit-Position: refs/heads/master@{#403134}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 3d0a1b68b407f0535052b62819f9e7bb68ee2a94