Reason for revert:
According to crbug.com/726706 this is now fixed so let's give it a try.
Original issue's description:
> Disable Goma for Linux32 (ARM) bots.
>
> This config is having issues to build reliably on Goma.
>
> BUG=chromium:726706
> TBR=mbonadei@webrtc.org
>
> Review-Url: https://codereview.webrtc.org/2911893002 .
> Cr-Commit-Position: refs/heads/master@{#18295}
> Committed: 3a343ad329TBR=mbonadei@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:726706
Review-Url: https://codereview.webrtc.org/2910963002
Cr-Commit-Position: refs/heads/master@{#18299}
fd1ff9b881