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The goal is to make it easier to read, and also easier to see which
attributes are being computed based on each accessibility mode.

Bug: none
Change-Id: Ic62a7db94d1e6383dabc1e5e0b7fa4ef78ce6e27
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2220713
Commit-Queue: Dominic Mazzoni <dmazzoni@chromium.org>
Reviewed-by: Chris Hall <chrishall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#773086}