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Based on feedback, update the notice which better represents the
functionality of the feature and includes relevant information about
the user's selection.

Mock at: go/quick-answers(slide 28)

Bug: b/159167345
Test: manual tests
Change-Id: I28df28fb025e42292ccdf5eb4d273c5b78a056d5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2250586
Commit-Queue: Li Lin <llin@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#782145}