The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/9867e6aab3d874d0b9e61e1da0920a375cb5a4c2

commit 9867e6aab3d874d0b9e61e1da0920a375cb5a4c2
Author: Joel Hockey <joelhockey@chromium.org>
Date: Thu Jun 07 03:21:53 2018

Add file_manager::util::GetCrostiniMountPointName

Refactored this code out so it can be used in tests.

Bug:  845830 
Change-Id: Id6b6f9ed35c38dcea114bcd4f18431ae0d3aafde
Reviewed-on: https://chromium-review.googlesource.com/1089603
Commit-Queue: Joel Hockey <joelhockey@chromium.org>
Reviewed-by: Stuart Langley <slangley@chromium.org>
Cr-Commit-Position: refs/heads/master@{#565164}
[modify] https://crrev.com/9867e6aab3d874d0b9e61e1da0920a375cb5a4c2/chrome/browser/chromeos/extensions/file_manager/private_api_misc.cc
[modify] https://crrev.com/9867e6aab3d874d0b9e61e1da0920a375cb5a4c2/chrome/browser/chromeos/file_manager/path_util.cc
[modify] https://crrev.com/9867e6aab3d874d0b9e61e1da0920a375cb5a4c2/chrome/browser/chromeos/file_manager/path_util.h

Using an image file for testing to verify this bug.  The integration tests were recently changed from using an image to a text file to ensure the test does not time out on the bots.  I don't expect any problem for that on UI tests, but I will keep an eye on:

https://test-results.appspot.com/dashboards/flakiness_dashboard.html#tests=FileManagerUITest

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8865dfe43ed9abf3b9f3674c06ca73e64dc5076b

commit 8865dfe43ed9abf3b9f3674c06ca73e64dc5076b
Author: Joel Hockey <joelhockey@chromium.org>
Date: Wed Jun 13 05:44:09 2018

FilesApp UI test for crostini quickview

* Add Quick View test for downloads and crostini.
* Update waitForElement to support searching elements
  within nested shadow roots.

Bug:  845830 
Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: I7b8f2ebd29eddfb3aa453aa5db0cd75aadec0650
Reviewed-on: https://chromium-review.googlesource.com/1090517
Commit-Queue: Joel Hockey <joelhockey@chromium.org>
Reviewed-by: Luciano Pacheco <lucmult@chromium.org>
Cr-Commit-Position: refs/heads/master@{#566732}
[modify] https://crrev.com/8865dfe43ed9abf3b9f3674c06ca73e64dc5076b/ui/file_manager/file_manager/foreground/js/quick_view_controller.js
[modify] https://crrev.com/8865dfe43ed9abf3b9f3674c06ca73e64dc5076b/ui/file_manager/file_manager/test/js/test_util.js
[add] https://crrev.com/8865dfe43ed9abf3b9f3674c06ca73e64dc5076b/ui/file_manager/file_manager/test/quick_view.js

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/65c2ab5e8709f8f2bd2485cacc38dfd429d91495

commit 65c2ab5e8709f8f2bd2485cacc38dfd429d91495
Author: Joel Hockey <joelhockey@chromium.org>
Date: Wed Jun 13 10:37:51 2018

FilesApp UI test for crostini quickview

* Add quickview test to FileManagerUITest
* Fix error in create_test_main script which was creating
  invalid markup.

Bug:  845830 
Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: I23b9e587df0ac8e4cdd3a45db4a9faba3f13e7cd
Reviewed-on: https://chromium-review.googlesource.com/1098754
Reviewed-by: Luciano Pacheco <lucmult@chromium.org>
Commit-Queue: Joel Hockey <joelhockey@chromium.org>
Cr-Commit-Position: refs/heads/master@{#566791}
[modify] https://crrev.com/65c2ab5e8709f8f2bd2485cacc38dfd429d91495/chrome/browser/chromeos/file_manager/file_manager_uitest.cc
[modify] https://crrev.com/65c2ab5e8709f8f2bd2485cacc38dfd429d91495/ui/file_manager/file_manager/test/quick_view.js
[modify] https://crrev.com/65c2ab5e8709f8f2bd2485cacc38dfd429d91495/ui/file_manager/file_manager/test/scripts/create_test_main.py