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This was added previously to make sure focus navigation worked
if notifications were cleared. We only need to activate the quick
settings widget and not focus an element in it.

Bug: 1062219
Change-Id: I7a4ae2ebb007872306e712dcc91a269f990ebbe3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2117151Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Ahmed Mehfooz <amehfooz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#753778}