Rename flush -> issueDrawMaybeInlineUpload

Change-Id: Ida1cc45fa7b7f72fe60c750636c5693564531ff0
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/268156
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Herb Derby <herb@google.com>
Auto-Submit: Herb Derby <herb@google.com>
2 files changed