Revert of SkPDF: unify drawText and drawPosText (patchset #2 id:40001 of https://codereview.chromium.org/2241683005/ )

Reason for revert:
I believe this is breaking the Google3 roll

Original issue's description:
> SkPDF: unify drawText and drawPosText
>
> Motivation: a later CL will add drawTextBlob() (after
> https://crrev.com/2084533004 lands).  This CL is designed
> with that change in mind.  Also fewer redundant lines of
> code.
>
> BUG=skia:
> GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2241683005
>
> Committed: https://skia.googlesource.com/skia/+/6059dc32fe36358175cb81541c91e74a2a7e771a

TBR=bungeman@google.com,halcanary@google.com
# 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/2248923002
4 files changed