GitLab

Avoid possibly long blocking times in the Windows SetupDi function
calls made to enumerate devices by offloading to the FILE thread.
Now that we can be sure that a stray request to the device won't
block the UI additional calls to get the device's product and serial
number strings can be made.

BUG=457899

Review URL: https://codereview.chromium.org/936603003

Cr-Commit-Position: refs/heads/master@{#316939}