MD Settings: Intenet: Fix network list

ui/webui/resources/cr_elements/network/cr_network_list_item.js

Index: ui/webui/resources/cr_elements/network/cr_network_list_item.js
diff --git a/ui/webui/resources/cr_elements/network/cr_network_list_item.js b/ui/webui/resources/cr_elements/network/cr_network_list_item.js
index 45f2330a01b0b0211c441882ca2e4c95699fe7c0..1e8e7d130ffa951a5d9e5c3dd01a652b2a72e3e7 100644
--- a/ui/webui/resources/cr_elements/network/cr_network_list_item.js
+++ b/ui/webui/resources/cr_elements/network/cr_network_list_item.js
@@ -44,6 +44,17 @@ Polymer({
       type: Boolean,
       reflectToAttribute: true,
     },
+
+    /**
+     * Reflect the element's tabindex attribute to a property so that embedded
+     * elements (e.g. the settings button) can become keyboard focusable when
+     * this element has keyboard focus.
+     */
+    tabindex: {
+      type: Number,
+      value: -1,
+      reflectToAttribute: true,
+    },
   },
 
   behaviors: [I18nBehavior],