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This CL sets up win64 official ci and try bots, and one of the use
cases is for PGO auto roller to validate the profiles and warm up GOMA
caches for other official builders.

Bug: 1071576
Change-Id: I234cac58eb473bdf7834d584c0615ce771fd9dcc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2159530Reviewed-by: Ben Pastene <bpastene@chromium.org>
Commit-Queue: Yuke Liao <liaoyuke@chromium.org>
Cr-Commit-Position: refs/heads/master@{#761096}