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This change adds a spoken feedback test for the tutorial in OOBE,
using an existing ChromeVox test as a template
(ChromeVoxTutorialTest.QuickOrientationLessonTest)

We also add a basic test for the tutorial when signed in.

Fixed: 1127048
AX-Relnotes: N/A
Change-Id: I4715fe719de24c14462bde369a753e519619d7fd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2533754
Commit-Queue: Akihiro Ota <akihiroota@chromium.org>
Reviewed-by: David Tseng <dtseng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#826942}