MD Settings: Restore focus when exiting various subpages, part 2.

chrome/browser/resources/settings/device_page/device_page.js

Index: chrome/browser/resources/settings/device_page/device_page.js
diff --git a/chrome/browser/resources/settings/device_page/device_page.js b/chrome/browser/resources/settings/device_page/device_page.js
index 9d4521589c4703fff4bcce75d258cdcd7885516a..dc714a08bbf958805b9f579a8b1f14e952fb898d 100644
--- a/chrome/browser/resources/settings/device_page/device_page.js
+++ b/chrome/browser/resources/settings/device_page/device_page.js
@@ -51,6 +51,27 @@ Polymer({
       },
       readOnly: true,
     },
+
+    /** @private {!Map<string, string>} */
+    focusConfig_: {
+      type: Object,
+      value: function() {
+        var map = new Map();
+        map.set(
+            settings.Route.POINTERS.path, '#pointersRow .subpage-arrow');
+        map.set(
+            settings.Route.KEYBOARD.path, '#keyboardRow .subpage-arrow');
+        map.set(
+            settings.Route.STYLUS.path, '#stylusRow .subpage-arrow');
+        map.set(
+            settings.Route.DISPLAY.path, '#displayRow .subpage-arrow');
+        map.set(
+            settings.Route.STORAGE.path, '#storageRow .subpage-arrow');
+        map.set(
+            settings.Route.POWER.path, '#powerRow .subpage-arrow');
+        return map;
+      },
+    },
   },
 
   observers: [