Revert of Move strike to subrun in GrAtlasTextContext (patchset #3 id:40001 of https...

Revert of Move strike to subrun in GrAtlasTextContext (patchset #3 id:40001 of https://codereview.chromium.org/1257253005/)

Reason for revert:
breaking bots

Original issue's description:
> Move strike to subrun in GrAtlasTextContext
>
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/77d89f7dd243a17452d3a5f16a98622993e6bdd9

TBR=bsalomon@google.com,robertphillips@google.com,jvanverth@google.com,joshualitt@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review URL: https://codereview.chromium.org/1266253002