[skif] Remove SK_USE_LEGACY_CONTENT_BOUNDS_PROPAGATION flag

Bug: b/40040587
Bug: b/40040615
Change-Id: I5881945334ed1859cea0ec13335b234596ab5248
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/795856
Auto-Submit: Michael Ludwig <michaelludwig@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Michael Ludwig <michaelludwig@google.com>
2 files changed