GitLab

This CL moves the type alias of FieldTrialParams from
field_trial_param_associator.h to field_trial_params.h and use
base::FieldTrialParams in blink.

Bug: 952716
Change-Id: Ia6587a4799a43591ef19cd88cc0c7292bc22c7f8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1605282Reviewed-by: Luke Halliwell <halliwell@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Reviewed-by: Alexei Svitkine <asvitkine@chromium.org>
Commit-Queue: Miyoung Shin(OOO till May 17) <myid.shin@igalia.com>
Cr-Commit-Position: refs/heads/master@{#659185}