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This CL adds a details pane in the file manager's .deb install dialog
to provide package name, version, and a description of the package.

Cq-Include-Trybots: luci.chromium.try:closure_compilation
Change-Id: I43833f2ce83645ea45d6c9a30f7bd3acd89a9cb4
Reviewed-on: https://chromium-review.googlesource.com/c/1167005Reviewed-by: Ben Wells <benwells@chromium.org>
Reviewed-by: Joel Hockey <joelhockey@chromium.org>
Reviewed-by: Ryo Hashimoto <hashimoto@chromium.org>
Reviewed-by: Nicholas Verne <nverne@chromium.org>
Commit-Queue: Timothy Loh <timloh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#601812}