yeah we need a "no USB devices found" string or something here

"No USB devices found" seems sufficient

"No USB devices found" SGTM too

CL at https://codereview.chromium.org/2891163002/

Screen shot of fixed version.

Deleted: Screenshot from 2017-05-18 13:35:44.png 5.9 KB

	Screenshot from 2017-05-18 13:35:44.png 5.9 KB View Download

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e2c35ba3891bb703bbc67c57d63b6c0a2299131d

commit e2c35ba3891bb703bbc67c57d63b6c0a2299131d
Author: dschuyler <dschuyler@chromium.org>
Date: Fri May 19 20:37:38 2017

[MD settings] explain when no usb devices are shown in site settings

This CL shows an explanation in the USB devices content settings page
when no USB devices are found. (So that the page is not blank, which
looks/looked broken).

BUG= 713428 
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2891163002
Cr-Commit-Position: refs/heads/master@{#473301}

[modify] https://crrev.com/e2c35ba3891bb703bbc67c57d63b6c0a2299131d/chrome/app/settings_strings.grdp
[modify] https://crrev.com/e2c35ba3891bb703bbc67c57d63b6c0a2299131d/chrome/browser/resources/settings/site_settings/usb_devices.html
[modify] https://crrev.com/e2c35ba3891bb703bbc67c57d63b6c0a2299131d/chrome/browser/resources/settings/site_settings/usb_devices.js
[modify] https://crrev.com/e2c35ba3891bb703bbc67c57d63b6c0a2299131d/chrome/browser/ui/webui/settings/md_settings_localized_strings_provider.cc