Do we have a screenshot or mock of this?

I attached a screenshot of what you get if you run the BrowserDialogTest, but it's not very illuminating as to what this dialog is actually used for. The code that invokes it normally is really confusing.

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	media-gallery-dialog-test.PNG 22.2 KB View Download

[Extensions Triage] Assigning to pkasting@ for further triage.

This is used to pick which locations on the user's filesystem are treated as "media galleries" (e.g. the user's Pictures folder).

To see this dialog in the wild, install https://chrome.google.com/webstore/detail/media-gallery-sample/lidepfgfmameopopgagobnpndcnfgbnk , run, and hit "Select galleries".

Screenshot attached.

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	Untitled.png 9.3 KB View Download

Most obvious thing that sticks out to me is the close button (I think this dialog is supposed to be modal so it should have none?).  Need to check spacing as well.

Load balance

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/6159cc652681c439663e8823135effe968b97077

commit 6159cc652681c439663e8823135effe968b97077
Author: Allen Bauer <kylixrd@chromium.org>
Date: Wed Feb 21 19:05:35 2018

Harmony: Removed the close button on the media-galleries dialog view.

Bug: 766300
Change-Id: I5a900c9542afccdfb33acc7dba90993bfdd4cce3
Reviewed-on: https://chromium-review.googlesource.com/929201
Reviewed-by: Finnur Thorarinsson <finnur@chromium.org>
Commit-Queue: Allen Bauer <kylixrd@chromium.org>
Cr-Commit-Position: refs/heads/master@{#538175}
[modify] https://crrev.com/6159cc652681c439663e8823135effe968b97077/chrome/browser/ui/views/extensions/media_galleries_dialog_views.cc
[modify] https://crrev.com/6159cc652681c439663e8823135effe968b97077/chrome/browser/ui/views/extensions/media_galleries_dialog_views.h

After UX review, bounce back if more work needed.

Clearing my ownership of Platform>Extension bugs. CC'ing Mark for reassignment/re-triaging