DevTools: Fix timeline overview flickering

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

 /*
  * Copyright (C) 2011 Google Inc.  All rights reserved.
  * Copyright (C) 2006, 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2007 Matt Lilek (pewtermoose@gmail.com).
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
@@ skipping 78 matching lines @@
   constructor() {
     this._elementDragMove = this._elementDragMove.bind(this);
     this._elementDragEnd = this._elementDragEnd.bind(this);
     this._mouseOutWhileDragging = this._mouseOutWhileDragging.bind(this);
   }
 
   _createGlassPane() {
     this._glassPaneInUse = true;
     if (!UI.DragHandler._glassPaneUsageCount++) {
       UI.DragHandler._glassPane = new UI.GlassPane();
-      UI.DragHandler._glassPane.setBlockPointerEvents(true);
       UI.DragHandler._glassPane.show(UI.DragHandler._documentForMouseOut);
     }
   }
 
   _disposeGlassPane() {
     if (!this._glassPaneInUse)
       return;
     this._glassPaneInUse = false;
     if (--UI.DragHandler._glassPaneUsageCount)
       return;
@@ skipping 1961 matching lines @@
    */
   constructor(message, okCallback, cancelCallback) {
     super(true);
     this.registerRequiredCSS('ui/confirmDialog.css');
     this.contentElement.createChild('div', 'message').createChild('span').textContent = message;
     var buttonsBar = this.contentElement.createChild('div', 'button');
     buttonsBar.appendChild(UI.createTextButton(Common.UIString('Ok'), okCallback));
     buttonsBar.appendChild(UI.createTextButton(Common.UIString('Cancel'), cancelCallback));
   }
 };