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

Source/devtools/front_end/TimelinePanel.js

Index: Source/devtools/front_end/TimelinePanel.js
diff --git a/Source/devtools/front_end/TimelinePanel.js b/Source/devtools/front_end/TimelinePanel.js
index f6913d325c1779328e03fbdf057580c0fc673afa..0b003b0397a26cb9e3db9c7644a6842a6b63e50f 100644
--- a/Source/devtools/front_end/TimelinePanel.js
+++ b/Source/devtools/front_end/TimelinePanel.js
@@ -156,6 +156,14 @@ 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) {