Revert "Revert "allow clients to opt into new didTranslate/didScale""

This reverts commit 4a46758db8a83ec23ade5319333db321bf0f7788.

Add guard to Flutter

Change-Id: Ief0e5cb36af13c8f00a36a617d0384622012d644
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/263937
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
7 files changed