GitLab

Windows doesn't give us fine grained notifications for device add
and remove so we must do a complete enumeration every time. This
patch figures out which devices are no longer present in the
enumeration and calls HidService::RemoveDevice.

BUG=395272
R=rockot@chromium.org

Review URL: https://codereview.chromium.org/399313008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@284321 0039d316-1c4b-4281-b951-d872f2087c98