Revert of Fix memory leak in "Begin atlasing" (https://codereview.chromium.org...

Revert of Fix memory leak in "Begin atlasing"   (https://codereview.chromium.org/361663002/)

Reason for revert:
Sigh

Original issue's description:
> Fix memory leak in (Begin atlasing  https://codereview.chromium.org/354533004/)
>
> TBR=bsalomon@google.com
>
> Committed: https://skia.googlesource.com/skia/+/40d9c0e331fe2b76b4e13ca6cdf1ea50451ba6cc

R=bsalomon@google.com
TBR=bsalomon@google.com
NOTREECHECKS=true
NOTRY=true

Author: robertphillips@google.com

Review URL: https://codereview.chromium.org/360663002