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We got a list of icons from UX per vertical, those are now added to
the client for easy use through local resources.

Bug: b/161337790
Change-Id: I118b4d2c2c9cb229165cfeccb058718f8580eece
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2299624
Commit-Queue: Sandro Maggi <sandromaggi@google.com>
Reviewed-by: Marian Fechete <marianfe@google.com>
Reviewed-by: Clemens Arbesser <arbesser@google.com>
Cr-Commit-Position: refs/heads/master@{#788668}