Revert of Revert of remove SK_SUPPORT_LEGACY_PATHOP_ENUMS (patchset #1 id:1 of https...

Revert of Revert of remove SK_SUPPORT_LEGACY_PATHOP_ENUMS (patchset #1 id:1 of https://codereview.chromium.org/1203983003/)

Reason for revert:
fixes have landed in android

Original issue's description:
> Revert of remove SK_SUPPORT_LEGACY_PATHOP_ENUMS (patchset #1 id:1 of https://codereview.chromium.org/1200323005/)
>
> Reason for revert:
> Breaking the Android build.
>
> Original issue's description:
> > remove SK_SUPPORT_LEGACY_PATHOP_ENUMS
> >
> > BUG=skia:
> > TBR=
> >
> > Committed: https://skia.googlesource.com/skia/+/8bcc7a00febd737f7e82513bd5e4a697526626de
>
> TBR=reed@google.com
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/ba9a4aa8550c982c480d03cb6ba2cabaf6209b41

TBR=scroggo@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review URL: https://codereview.chromium.org/1218523002