Revert of Fix GrAtlasTextBlob bounds management (patchset #8 id:140001 of https://codereview.chromium.org/1605013002/ )

Reason for revert:
seems to break upright matrix

Original issue's description:
> Fix GrAtlasTextBlob bounds management
>
> BUG=skia:
> GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1605013002
>
> Committed: https://skia.googlesource.com/skia/+/ae473fdfc3db2d9dd82b05b2568767d6d4038fcd

TBR=bsalomon@google.com,jvanverth@google.com,joshualitt@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review URL: https://codereview.chromium.org/1615473002
5 files changed