[canvaskit] Deprecate measureText

After discussion on https://skia-review.googlesource.com/c/skia/+/334096
we decided to remove this misleading API.

Bug: skia:10480
Change-Id: I3daeb6251d5fed829742cfe39c7cade4f19e5a43
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/334101
Reviewed-by: Ben Wagner <bungeman@google.com>
Reviewed-by: Nathaniel Nifong <nifong@google.com>
3 files changed