MD Settings: Restore focus after exiting various subpages.

chrome/browser/resources/settings/people_page/people_page.js

Index: chrome/browser/resources/settings/people_page/people_page.js
diff --git a/chrome/browser/resources/settings/people_page/people_page.js b/chrome/browser/resources/settings/people_page/people_page.js
index c53125e22c6338ccee18e2474c35fc4faee8f7f0..b30631d10f47eb3bfb3368c39018dd1d0b6a5796 100644
--- a/chrome/browser/resources/settings/people_page/people_page.js
+++ b/chrome/browser/resources/settings/people_page/people_page.js
@@ -145,6 +145,31 @@ Polymer({
       value: false,
     },
 // </if>
+
+    /** @private {?Map<string, string>} */
+    focusConfig_: Object,
+  },
+
+  /** @override */
+  ready: function() {
+    this.focusConfig_ = new Map();
+    this.focusConfig_.set(
+        settings.Route.SYNC.path, '#sync-status .subpage-arrow');
+// <if expr="not chromeos">
+    this.focusConfig_.set(
+        settings.Route.MANAGE_PROFILE.path,
+        '#picture-subpage-trigger .subpage-arrow');
+// </if>
+// <if expr="chromeos">
+    this.focusConfig_.set(
+        settings.Route.CHANGE_PICTURE.path,
+        '#picture-subpage-trigger .subpage-arrow');
+    this.focusConfig_.set(
+        settings.Route.LOCK_SCREEN.path, '#lockScreenSubpageTrigger');
+    this.focusConfig_.set(
+        settings.Route.ACCOUNTS.path,
+        '#manage-other-people-subpage-trigger .subpage-arrow');
+// </if>
   },
 
   /** @override */