GitLab

Also, do not allow negative sizes.

Bug: 881076
Change-Id: I254d52258f5902d5d8740e74be35012cdf2b43e4
Reviewed-on: https://chromium-review.googlesource.com/c/1336524Reviewed-by: Joshua Pawlicki <waffles@chromium.org>
Commit-Queue: Sorin Jianu <sorin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#608443}