Reason for revert:
This appears to have broken several things.
Original issue's description:
> SkTArray to move when moving.
>
> This updates SkTArray to move elements when possible, instead of always
> copying them.
>
> TBR=reed
> Agreed moving is good. This should also become private.
>
> Committed: https://skia.googlesource.com/skia/+/3c69348e725131150e4ab962dec1b3ff1148a6bdTBR=reed@google.com,mtklein@google.com,bungeman@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Review URL: https://codereview.chromium.org/1677103002