MD Settings: Restore focus after closing various dialogs.

chrome/browser/resources/settings/reset_page/reset_page.js

Index: chrome/browser/resources/settings/reset_page/reset_page.js
diff --git a/chrome/browser/resources/settings/reset_page/reset_page.js b/chrome/browser/resources/settings/reset_page/reset_page.js
index 20ca0b88db165a6db250abb8241ce840343ac90c..c46eace46b2103bc70753e8c076ad15f44de5b87 100644
--- a/chrome/browser/resources/settings/reset_page/reset_page.js
+++ b/chrome/browser/resources/settings/reset_page/reset_page.js
@@ -59,6 +59,7 @@ Polymer({
   /** @private */
   onResetProfileDialogClose_: function() {
     settings.navigateToPreviousRoute();
+    this.$.resetProfileArrow.focus();
   },
 
 // <if expr="chromeos">
@@ -74,6 +75,7 @@ Polymer({
   /** @private */
   onPowerwashDialogClose_: function() {
     this.showPowerwashDialog_ = false;
+    this.$.powerwashArrow.focus();
   },
 // </if>
 });