[canvaskit] Increase timeout thresholds for perf

Especially on the very first load of the wasm binary,
this has been seen to sometimes timeout.

Bug: skia:
Change-Id: I9321eb1e2f70751a1dbbaee3c1e54d38f5bea450
Reviewed-on: https://skia-review.googlesource.com/c/163247
Reviewed-by: Kevin Lubick <kjlubick@google.com>
2 files changed