1. Don't optimize small functions early when tiering up from ignition
to Turboprop.
2. When tiering up from Turboprop to Turbofan scale the ticks so we
optimize small functions at roughly same time as default.
3. Adjust for the fact that profiler ticks are updated before performing
the ShouldOptimize check when tiering up from TP -> TF.

Bug: v8:9684
Change-Id: I6b68eed70abb9a86f9b99eac9c0b9a1fe6346027
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2560725
Commit-Queue: Mythri Alle <mythria@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71436}