This CL contains the base implementation for logging function events.
Currently only compiler events are support (compile, compile-lazy...),
future CLs will enable log events for parsing and first-time exeuction
of functions.

Bug: chromium:757467
Change-Id: Ia705979190a3ebc1009989610483a7a141bc504b
Reviewed-on: https://chromium-review.googlesource.com/743921Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49040}