MD Settings: Restore focus when channel switcher dialog is closed.

chrome/browser/resources/settings/about_page/detailed_build_info.js

Index: chrome/browser/resources/settings/about_page/detailed_build_info.js
diff --git a/chrome/browser/resources/settings/about_page/detailed_build_info.js b/chrome/browser/resources/settings/about_page/detailed_build_info.js
index 78d22e1e751f3fbafef175a1018f4d5547357793..33a90b780c461c96e70c95628ead4ad30ba2909e 100644
--- a/chrome/browser/resources/settings/about_page/detailed_build_info.js
+++ b/chrome/browser/resources/settings/about_page/detailed_build_info.js
@@ -89,16 +89,12 @@ Polymer({
   onChangeChannelTap_: function(e) {
     e.preventDefault();
     this.showChannelSwitcherDialog_ = true;
-    // Async to wait for dialog to appear in the DOM.
-    this.async(function() {
-      var dialog = this.$$('settings-channel-switcher-dialog');
-      // Register listener to detect when the dialog is closed. Flip the boolean
-      // once closed to force a restamp next time it is shown such that the
-      // previous dialog's contents are cleared.
-      dialog.addEventListener('close', function() {
-        this.showChannelSwitcherDialog_ = false;
-        this.updateChannelInfo_();
-      }.bind(this));
-    }.bind(this));
+  },
+
+  /** @private */
+  onChannelSwitcherDialogClosed_: function() {
+    this.showChannelSwitcherDialog_ = false;
+    this.$$('paper-button').focus();
+    this.updateChannelInfo_();

[stevenjb, 2017/04/06 23:08:06]

Ahh, much nicer :) Cheers!

   },
 });