[MD History] Focus the search bar on load.

chrome/browser/resources/md_history/history.js

Index: chrome/browser/resources/md_history/history.js
diff --git a/chrome/browser/resources/md_history/history.js b/chrome/browser/resources/md_history/history.js
index 4cce580cc9e8ccc0e21f3930cb76b28bed560a43..3cdf36e700f76ece44be14ce6678996b556ad4e3 100644
--- a/chrome/browser/resources/md_history/history.js
+++ b/chrome/browser/resources/md_history/history.js
@@ -51,6 +51,10 @@ function historyResult(info, results) {
             'metricsHandler:recordTime',
             ['History.ResultsRenderedTime', window.performance.now()]);
       });
+
+      // Focus the search field on load. Done here to ensure the history page
+      // is rendered before we try to take focus.
+      $('history-app').focusToolbarSearchField();
     }
   });
 }