Site Settings Desktop: Implement USB devices section.

chrome/browser/resources/settings/site_settings/site_list.js

Index: chrome/browser/resources/settings/site_settings/site_list.js
diff --git a/chrome/browser/resources/settings/site_settings/site_list.js b/chrome/browser/resources/settings/site_settings/site_list.js
index 76506723940439099f22bf3ebb6369a69deb4387..619943044ab4f77e77407e475f7fa86150601af6 100644
--- a/chrome/browser/resources/settings/site_settings/site_list.js
+++ b/chrome/browser/resources/settings/site_settings/site_list.js
@@ -254,9 +254,11 @@ Polymer({
     var promiseList = [];
     for (var type in settings.ContentSettingsTypes) {
       if (settings.ContentSettingsTypes[type] ==
-          settings.ContentSettingsTypes.PROTOCOL_HANDLERS) {
-        // Protocol handlers don't have data stored the way all the other
-        // categories do.
+          settings.ContentSettingsTypes.PROTOCOL_HANDLERS ||
+          settings.ContentSettingsTypes[type] ==
+          settings.ContentSettingsTypes.USB_DEVICES) {
+        // Protocol handlers and USB devices don't have data stored the way all
+        // the other categories do.
         continue;
       }