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A result looks crowded with a tab switch button. The spec asks that
we use the two line format if the tab switch button is present.

This CL also expands the button to 32px, per spec.

Bug: 780835
Change-Id: I372cb24646bdd448497f0bcf456d383a04a8a55b
Reviewed-on: https://chromium-review.googlesource.com/1087754
Commit-Queue: Justin Donnelly <jdonnelly@chromium.org>
Reviewed-by: Justin Donnelly <jdonnelly@chromium.org>
Reviewed-by: Dave Schuyler <dschuyler@chromium.org>
Cr-Commit-Position: refs/heads/master@{#567280}