Fix reduceOpsTaskSplitting + image_from_yuv_textures

SkTHashMap->remove does not like if you try to remove
an entry that isn't in there. In that case, we don't
want to do anything.

Bug: skia:10877
Change-Id: Ib87aac7a132c78915ec18724f847c44c2c3efa80
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/360596
Auto-Submit: Adlai Holler <adlai@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Adlai Holler <adlai@google.com>
1 file changed