Merge "Uniform the settings enum proto for accessibility tutorial." into rvc-dev am: a83a8e29c3
am: c9be2d385c
am: 5c66f4b045
am: 0f3e0a9ecf
am: 3bd5c2cc3e
Change-Id: I11dd770e962f203be84fef78e96844e641f614cf
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