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This CL is a follow-up to CL 2273083002 where the <h2> sub-labels were
updated to the current mocks. The displays sub-page (chromeos only) also
needed to be updated.

BUG=638461
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2283933002
Cr-Commit-Position: refs/heads/master@{#414855}