various: Change auto to not deduce raw pointers.

This patch updates the code to prevent auto deducing to a raw pointer.

R=danakj, dcheng
BUG=554600

Review-Url: https://codereview.chromium.org/2105123002
Cr-Commit-Position: refs/heads/master@{#405377}
10 files changed