This cl: https://chromium-review.googlesource.com/c/538614/ changes the
number of ticks required for tiering up based on the size of function. An
earlier cl: https://chromium-review.googlesource.com/c/529165/ also resets
ticks when type feedback changes. So, it is reasonable to assume that a
function which has necessary number of ticks has the required type feedback
for optimizing. Hence, removing the check for type feedback from the tierinup
decision.

Bug: 
Change-Id: Ia350ad4dfba5f93f1a17bdc0c309bf6b41b0c1c9
Reviewed-on: https://chromium-review.googlesource.com/647851Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Mythri Alle <mythria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47816}