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This piece of Cocoa secondary UI has been obsolete for several releases now
and its tests are broken in MacViews mode.

Bug: 832676
Change-Id: I2cf1fa087f29a288005913424396fc399eabf210
Reviewed-on: https://chromium-review.googlesource.com/1148012Reviewed-by: Robert Sesek <rsesek@chromium.org>
Commit-Queue: Elly Fong-Jones <ellyjones@chromium.org>
Cr-Commit-Position: refs/heads/master@{#577514}