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This CL renames TrayDetailsView to TrayDetailedView, as in other places
it's always called "detailed view" e.g. CreateDetailedView(),
NetworkStateListDetailedView, CastDetailedView,
AccessibilityDetailedView, etc.

TEST=ash_unittests
BUG=none

Change-Id: I84bc2fc7ade4bc71d9907427c35501f21f9da3a6
Reviewed-on: https://chromium-review.googlesource.com/1068888Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Commit-Queue: Tetsui Ohkubo <tetsui@chromium.org>
Cr-Commit-Position: refs/heads/master@{#560870}