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:

Review URL: https://codereview.chromium.org/1203983003
2 files changed