Helper function for camera setup

Change-Id: I839fea29c2e56cfc2a4e4557da3197bf211513eb
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/299654
Commit-Queue: Nathaniel Nifong <nifong@google.com>
Reviewed-by: Kevin Lubick <kjlubick@google.com>
5 files changed