TimelinePanel: REGRESSION search doesn't work if focus not in records view.

Source/devtools/front_end/TimelinePanel.js

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2012 Intel Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 138 matching lines @@
     Tracing: "Tracing"
 };
 
 // Define row and header height, should be in sync with styles for timeline graphs.
 WebInspector.TimelinePanel.rowHeight = 18;
 WebInspector.TimelinePanel.headerHeight = 20;
 
 WebInspector.TimelinePanel.durationFilterPresetsMs = [0, 1, 15];
 
 WebInspector.TimelinePanel.prototype = {
+    /**
+     * @return {?WebInspector.SearchableView}
+     */
+    searchableView: function()
+    {
+        return this._searchableView;
+    },
+
     wasShown: function()
     {
         if (!WebInspector.TimelinePanel._categoryStylesInitialized) {
             WebInspector.TimelinePanel._categoryStylesInitialized = true;
             var style = document.createElement("style");
             var categories = WebInspector.TimelineUIUtils.categories();
             style.textContent = Object.values(categories).map(WebInspector.TimelineUIUtils.createStyleRuleForCategory).join("\n");
             document.head.appendChild(style);
         }
     },
@@ skipping 1062 matching lines @@
      * @param {!WebInspector.TimelineModel.Record} record
      * @return {boolean}
      */
     accept: function(record)
     {
         return !this._hiddenRecords[record.type];
     },
 
     __proto__: WebInspector.TimelineModel.Filter.prototype
 }