Replace paper-checkbox with a paper-icon-button-light

chrome/browser/resources/md_history/history_item.js

Index: chrome/browser/resources/md_history/history_item.js
diff --git a/chrome/browser/resources/md_history/history_item.js b/chrome/browser/resources/md_history/history_item.js
index 4d369a3b423f0a66d1aa760427f3918cde85cb13..8f09ce14115888a596fd49f24cebcef0eee45baa 100644
--- a/chrome/browser/resources/md_history/history_item.js
+++ b/chrome/browser/resources/md_history/history_item.js
@@ -14,7 +14,7 @@ cr.define('md_history', function() {
       // Search term used to obtain this history-item.
       searchTerm: {type: String},
 
-      selected: {type: Boolean, notify: true},
+      selected: {type: Boolean, reflectToAttribute: true},
 
       isFirstItem: {type: Boolean, reflectToAttribute: true},
 
@@ -74,6 +74,15 @@ cr.define('md_history', function() {
     },
 
     /**
+     * @param {bool} bool
+     * @return {string}
+     * @private
+     */
+    getBoolString_: function(bool) {
+      return bool ? 'true' : 'false';
+    },
+
+    /**
      * Remove bookmark of current item when bookmark-star is clicked.
      * @private
      */