Revert "Add number ordering to SkFilterQuality"

This reverts commit af68258c2eee593160996893c2c5e3c110e03024.

Reason for revert: SkFilterQuality is not a scoped enum, so this defines `kMaxValue` without any scoping to Skia by naming convention or namespace, breaking compatibility with other systems that want to use that.  (E.g. Android)

Original change's description:
> Add number ordering to SkFilterQuality
>
> As explained in the bug, I would like to add a histogram to study how
> users use the image smoothing quality in Chrome. In order to do that,
> we need to ensure that the enums are not reordered or changed, so I
> added kNone_SkFilterQuality = 0, etc. I also added kMaxValue for
> histogram to work.
>
> Bug: 1176091
> Change-Id: I3af3213f699016a525caad5b0b51e0cc7aab2c52
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/368157
> Commit-Queue: Mike Reed <reed@google.com>
> Auto-Submit: Yi Xu <yiyix@chromium.org>
> Reviewed-by: Mike Reed <reed@google.com>

TBR=reed@google.com,yiyix@chromium.org

Change-Id: Iec24ba3864af69e34f2721a72de1c0a271d328f6
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 1176091
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/371936
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
1 file changed