DevTools: Fix timeline overview flickering

third_party/WebKit/Source/devtools/front_end/ui/Toolbar.js

 /*
  * Copyright (C) 2009 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 106 matching lines @@
         button._clicked(/** @type {!Event} */ (event.data));
       }
 
       mainButtonClone.setToggled(action.toggled());
       buttons.push(mainButtonClone);
 
       var document = button.element.ownerDocument;
       document.documentElement.addEventListener('mouseup', mouseUp, false);
 
       var optionsGlassPane = new UI.GlassPane();
-      optionsGlassPane.setBlockPointerEvents(true);
+      optionsGlassPane.setPointerEventsBehavior(UI.GlassPane.PointerEventsBehavior.BlockedByGlassPane);
       optionsGlassPane.show(document);
       var optionsBar = new UI.Toolbar('fill', optionsGlassPane.contentElement);
       optionsBar._contentElement.classList.add('floating');
       const buttonHeight = 26;
 
       var hostButtonPosition = button.element.boxInWindow().relativeToElement(UI.GlassPane.container(document));
 
       var topNotBottom = hostButtonPosition.y + buttonHeight * buttons.length < document.documentElement.offsetHeight;
 
       if (topNotBottom)
@@ skipping 915 matching lines @@
   /**
    * @param {!Common.Setting} setting
    * @param {string=} tooltip
    * @param {string=} alternateTitle
    */
   constructor(setting, tooltip, alternateTitle) {
     super(alternateTitle || setting.title() || '', tooltip);
     UI.SettingsUI.bindCheckbox(this.inputElement, setting);
   }
 };