Add unit test for O(n^3) behavior in the inliner.

In practice, the inline threshold does a good job of limiting the
blast radius here.

Change-Id: I495184116e733262ea9d84fec30885ea047ca116
Bug: skia:10945
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/334597
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
3 files changed