DO NOT COMMIT DevTools: reintroduce fullViewportUpdate

third_party/WebKit/Source/devtools/front_end/console/ConsoleViewport.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 354 matching lines @@
 
     this._partialViewportUpdate(prepare.bind(this));
     this._contentElement.style.removeProperty('height');
     // Should be the last call in the method as it might force layout.
     if (shouldRestoreSelection)
       this._restoreSelection(selection);
     if (this._stickToBottom)
       this.element.scrollTop = 10000000;
   }
 
+  fullViewportInvalidate() {
+    for (var i = 0; i < this._renderedItems.length; ++i)
+      this._renderedItems[i].willHide();
+    this._contentElement.removeChildren();
+    this.invalidate();
+  }
+
   /**
    * @param {function()} prepare
    */
   _partialViewportUpdate(prepare) {
     var itemsToRender = new Set();
     for (var i = this._firstActiveIndex; i <= this._lastActiveIndex; ++i)
       itemsToRender.add(this._providerElement(i));
-    var willBeHidden = this._renderedItems.filter(item => !itemsToRender.has(item));
+    var willBeHidden = this._renderedItems.filter(item => item.element().parentElement && !itemsToRender.has(item));
     for (var i = 0; i < willBeHidden.length; ++i)
       willBeHidden[i].willHide();
     prepare();
     for (var i = 0; i < willBeHidden.length; ++i)
       willBeHidden[i].element().remove();
 
     var wasShown = [];
     var anchor = this._contentElement.firstChild;
     for (var viewportElement of itemsToRender) {
       var element = viewportElement.element();
+      var shouldCallWasShown = !element.parentElement;
       if (element !== anchor) {
-        var shouldCallWasShown = !element.parentElement;
         if (shouldCallWasShown)
           wasShown.push(viewportElement);
         this._contentElement.insertBefore(element, anchor);
       } else {
         anchor = anchor.nextSibling;
       }
     }
     for (var i = 0; i < wasShown.length; ++i)
       wasShown[i].wasShown();
     this._renderedItems = Array.from(itemsToRender);
@@ skipping 193 matching lines @@
 Console.ConsoleViewportElement.prototype = {
   willHide() {},
 
   wasShown() {},
 
   /**
    * @return {!Element}
    */
   element() {},
 };