[ConsentV2] Upstream detection logic to component

This CL upstreams detection logic for cart visit and checkout visit to
commerce component so that it can be used in browser process.

Bug: 1310422
Change-Id: Idafa8128321086b05579592f75c9b274ed5979fe
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3553827
Reviewed-by: Wei-Yin Chen <wychen@chromium.org>
Reviewed-by: Ted Choc <tedchoc@chromium.org>
Reviewed-by: Mei Liang <meiliang@chromium.org>
Reviewed-by: Eric Orth <ericorth@chromium.org>
Reviewed-by: Dana Fried <dfried@chromium.org>
Commit-Queue: Yue Zhang <yuezhanggg@chromium.org>
Cr-Commit-Position: refs/heads/main@{#989312}