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This CL adds a new barcode detection toggle button and removes the old
item in expert mode menu.

Bug: b/172879638
Test: Manually
Change-Id: Ia89657f5d3d2900b53721f650058240e472b254b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2594827Reviewed-by: Wei Lee <wtlee@chromium.org>
Commit-Queue: Shik Chen <shik@chromium.org>
Cr-Commit-Position: refs/heads/master@{#837518}