GitLab

Better document pointer ownership.

BUG=123762

Change-Id: I7be106bbf079ea2a30024e129d693ebe49454acf
Reviewed-on: https://chromium-review.googlesource.com/993236Reviewed-by: Roger Tawa <rogerta@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#548466}