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- Make the "You and Google" and "Auto-fill" sections visible,
when settings is based on an ephemeral guest profile.
- The notion of Ephemeral Guest profiles (go/ephemeral-guest-profiles)
is to be replacing the current guest profiles.

Bug: 1140419
Change-Id: If10584bb4a8105275c2eac8c581c7abccf545225
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2483753Reviewed-by: dpapad <dpapad@chromium.org>
Commit-Queue: Huanzhong Huang <huanzhong@chromium.org>
Cr-Commit-Position: refs/heads/master@{#819350}