Similar to  bug 852055 , looks like this occasionally times out on ASan LSan but is otherwise fine. This one is much more frequent though, so might have to disable on ASan/LSan.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/210d3b47ff5bff7ca989f5126ef00c7245a7ecbc

commit 210d3b47ff5bff7ca989f5126ef00c7245a7ecbc
Author: Marc Treib <treib@chromium.org>
Date: Mon Jun 18 14:07:26 2018

Disable FolderShortcuts/FilesAppBrowserTest on ASan

It's too slow and times out.

TBR=fukino@chromium.org

Bug:  851988 
Change-Id: I868d846e3fae5f7dd16b2a2c7203602008221396
Reviewed-on: https://chromium-review.googlesource.com/1104424
Reviewed-by: Marc Treib <treib@chromium.org>
Commit-Queue: Marc Treib <treib@chromium.org>
Cr-Commit-Position: refs/heads/master@{#567991}
[modify] https://crrev.com/210d3b47ff5bff7ca989f5126ef00c7245a7ecbc/chrome/browser/chromeos/file_manager/file_manager_browsertest.cc

Logs in the List of all flakes from https://chromium-try-flakes.appspot.com in the OP say:

[6664:6664:0612/055926.363102:INFO:CONSOLE(296)] "Uncaught (in promise) TypeError: Cannot read property 'sort' of undefined", source: chrome-extension://oobinhbdbiehknkpbpejbbpdbkdjmoco/remote_call.js (296)
BrowserTestBase received signal: Terminated.

[30209:30209:0612/045430.264310:INFO:CONSOLE(174)] "Uncaught (in promise) TypeError: Cannot read property 'length' of undefined", source: chrome-extension://oobinhbdbiehknkpbpejbbpdbkdjmoco/remote_call.js (174)
BrowserTestBase received signal: Terminated.

etc, which is a change in behavior in these tests.  And searching crbug for those strings, we find  issue 852246 .

A V8 roll crrev.com/566206 [1] introduced this the change in test behavior, and since it affected JS Array types, that was quickly fixed within a day.

[1]  https://crbug.com/852246#c12 

The try flakes data is accurate in two ways: that a regression was introduced, and that is was fixed (no reports after 2018-06-12, and test active).

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/b387bc4704ed6843e1325baf03f89069a1647d99

commit b387bc4704ed6843e1325baf03f89069a1647d99
Author: Noel Gordon <noel@chromium.org>
Date: Tue Jun 19 00:37:47 2018

Revert "Disable FolderShortcuts/FilesAppBrowserTest on ASan"

This reverts commit 210d3b47ff5bff7ca989f5126ef00c7245a7ecbc.

Reason for revert:  https://crbug.com/852246#c12 , this issue was fixed
already, no need to revert. "Slowness and times out": not so per the
logs. They were reporting JS exceptions were being thrown in test due to JS Array being 'undefined',  issue 852246 .

Original change's description:
> Disable FolderShortcuts/FilesAppBrowserTest on ASan
> 
> It's too slow and times out.
> 
> TBR=fukino@chromium.org
> 
> Bug:  851988 
> Change-Id: I868d846e3fae5f7dd16b2a2c7203602008221396
> Reviewed-on: https://chromium-review.googlesource.com/1104424
> Reviewed-by: Marc Treib <treib@chromium.org>
> Commit-Queue: Marc Treib <treib@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#567991}

TBR=fukino@chromium.org,treib@chromium.org

Change-Id: Ia287519344b7aeecc03da8539fc4448e1224c740
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug:  851988 ,  852246 
Reviewed-on: https://chromium-review.googlesource.com/1105537
Reviewed-by: Noel Gordon <noel@chromium.org>
Commit-Queue: Noel Gordon <noel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#568261}
[modify] https://crrev.com/b387bc4704ed6843e1325baf03f89069a1647d99/chrome/browser/chromeos/file_manager/file_manager_browsertest.cc