WebUI: cr-search-field: Remove delegation pattern, use simple event instead.

chrome/browser/resources/md_history/history_toolbar.js

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-/**
- * @constructor
- * @implements {SearchFieldDelegate}
- * @param {!HistoryToolbarElement} toolbar This history-toolbar.
- */
-function ToolbarSearchFieldDelegate(toolbar) {
-  this.toolbar_ = toolbar;
-}
-
-ToolbarSearchFieldDelegate.prototype = {
-  /** @override */
-  onSearchTermSearch: function(searchTerm) {
-    this.toolbar_.onSearch(searchTerm);
-  }
-};
-
 Polymer({
   is: 'history-toolbar',
   properties: {
     // Number of history items currently selected.
     count: {
       type: Number,
       value: 0,
       observer: 'changeToolbarView_'
     },
 
@@ skipping 59 matching lines @@
       return;
 
     this.searchTerm = search;
     var searchField = /** @type {!CrToolbarElement} */(this.$['main-toolbar'])
                           .getSearchField();
     searchField.showAndFocus();
     searchField.setValue(search);
   },
 
   /**
-   * @param {string} searchTerm
+   * @param {!CustomEvent} event
+   * @private
    */
-  onSearch: function(searchTerm) {
-    this.searchTerm = searchTerm;
-  },
-
-  attached: function() {
-    this.searchFieldDelegate_ = new ToolbarSearchFieldDelegate(this);
-    /** @type {!CrToolbarElement} */(this.$['main-toolbar']).getSearchField()
-        .setDelegate(this.searchFieldDelegate_);
+  onSearchChanged_: function(event) {
+    this.searchTerm = /** @type {string} */ (event.detail);
   },
 
   onClearSelectionTap_: function() {
     this.fire('unselect-all');
   },
 
   onDeleteTap_: function() {
     this.fire('delete-selected');
   },
 
   /**
    * If the user is a supervised user the delete button is not shown.
    * @private
    */
   deletingAllowed_: function() {
     return loadTimeData.getBoolean('allowDeletingHistory');
   },
 
   numberOfItemsSelected_: function(count) {
     return count > 0 ? loadTimeData.getStringF('itemsSelected', count) : '';
   },
 
   getHistoryInterval_: function(queryStartTime, queryEndTime) {
     // TODO(calamity): Fix the format of these dates.
     return loadTimeData.getStringF(
       'historyInterval', queryStartTime, queryEndTime);
   }
 });