[canvaskit] Add perf jobs

Of note, the perf results reported are not directly
comparable CPU->GPU because the GPU ones are likely
emulated (no real gpu in the Docker container on an
GCE VM).

Bug: skia:
Change-Id: I52259085f4d9e22c45b67f3e8ce1211a5c6c6d3e
Reviewed-on: https://skia-review.googlesource.com/c/163126
Reviewed-by: Kevin Lubick <kjlubick@google.com>
18 files changed