[DevTools] Allow hide timeout in popover be longer than show timeout

third_party/WebKit/Source/devtools/front_end/perf_ui/TimelineOverviewPane.js

 /*
  * Copyright (C) 2013 Google 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.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 37 matching lines @@
     this._cursorArea.addEventListener('mouseleave', this._hideCursor.bind(this), true);
 
     this._overviewGrid.setResizeEnabled(false);
     this._overviewGrid.addEventListener(PerfUI.OverviewGrid.Events.WindowChanged, this._onWindowChanged, this);
     this._overviewGrid.setClickHandler(this._onClick.bind(this));
     this._overviewControls = [];
     this._markers = new Map();
 
     this._popoverHelper = new UI.PopoverHelper(this._cursorArea, this._getPopoverRequest.bind(this));
     this._popoverHelper.setHasPadding(true);
-    this._popoverHelper.setTimeout(0);
+    this._popoverHelper.setTimeout(0, 300);
 
     this._updateThrottler = new Common.Throttler(100);
 
     this._cursorEnabled = false;
     this._cursorPosition = 0;
     this._lastWidth = 0;
   }
 
   /**
    * @param {!Event} event
@@ skipping 458 matching lines @@
    */
   onClick(event) {
     return false;
   }
 
   resetCanvas() {
     this._canvas.width = this.element.clientWidth * window.devicePixelRatio;
     this._canvas.height = this.element.clientHeight * window.devicePixelRatio;
   }
 };