GitLab

The flag was originally added to suppress messages from popping up if
the Windows shell failed to open the specified item.

Specifically, the ui::base::win::OpenAnyViaShell() function handles the
case where ShellExecute() returns ERROR_NO_ASSOCIATION when invoked with
the "open" verb by attempting to invoke the same using the "openas"
verb. Thus an intervening error message would not have been useful.
However the SEE_MASK_FLAG_NO_UI flag may suppress other error messages
and may also have side-effects beyond the display of failure messages.
See bug for details.

Bug: 819809
Change-Id: I8def155aa11b14f9a57a8f66add193dc281971cb
Reviewed-on: https://chromium-review.googlesource.com/966963
Commit-Queue: Asanka Herath <asanka@chromium.org>
Reviewed-by: Eric Lawrence <elawrence@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Cr-Commit-Position: refs/heads/master@{#548039}