Add skia_use_legacy_colorfilter_imagefilter GN arg for flutter roll

Bug: skia:9283
Change-Id: I955379916f28a16fd618a64f3ede9202809f90fa
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/693056
Commit-Queue: Michael Ludwig <michaelludwig@google.com>
Auto-Submit: Michael Ludwig <michaelludwig@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
2 files changed