DevTools: fix network grid scroll to bottom, render group node frame icon.

third_party/WebKit/Source/devtools/front_end/network/NetworkLogViewColumns.js

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 /**
  * @unrestricted
  */
 Network.NetworkLogViewColumns = class {
   /**
    * @param {!Network.NetworkLogView} networkLogView
    * @param {!Network.NetworkTransferTimeCalculator} timeCalculator
@@ skipping 100 matching lines @@
     this._dataGrid.markColumnAsSortedBy(
         Network.NetworkLogViewColumns._initialSortColumn, DataGrid.DataGrid.Order.Ascending);
 
     this._splitWidget = new UI.SplitWidget(true, true, 'networkPanelSplitViewWaterfall', 200);
     var widget = this._dataGrid.asWidget();
     widget.setMinimumSize(150, 0);
     this._splitWidget.setMainWidget(widget);
   }
 
   _setupWaterfall() {
-    this._waterfallColumn =
-        new Network.NetworkWaterfallColumn(this._networkLogView.rowHeight(), this._networkLogView.calculator());
+    this._waterfallColumn = new Network.NetworkWaterfallColumn(this._networkLogView.calculator());
 
     this._waterfallColumn.element.addEventListener('contextmenu', handleContextMenu.bind(this));
     this._waterfallColumn.element.addEventListener('mousewheel', this._onMouseWheel.bind(this, false), {passive: true});
     this._dataGridScroller.addEventListener('mousewheel', this._onMouseWheel.bind(this, true), true);
 
     this._waterfallScroller = this._waterfallColumn.contentElement.createChild('div', 'network-waterfall-v-scroll');
     this._waterfallScrollerContent = this._waterfallScroller.createChild('div', 'network-waterfall-v-scroll-content');
 
     this._dataGrid.addEventListener(DataGrid.DataGrid.Events.PaddingChanged, () => {
       this._waterfallScrollerWidthIsStale = true;
@@ skipping 95 matching lines @@
   setCalculator(x) {
     this._waterfallColumn.setCalculator(x);
   }
 
   scheduleRefresh() {
     this._waterfallColumn.scheduleDraw();
   }
 
   _updateRowsSize() {
     var largeRows = !!this._networkLogLargeRowsSetting.get();
+
     this._dataGrid.element.classList.toggle('small', !largeRows);
     this._dataGrid.scheduleUpdate();
 
     this._waterfallScrollerWidthIsStale = true;
-    this._waterfallColumn.setRowHeight(this._networkLogView.rowHeight());
+    this._waterfallColumn.setRowHeight(largeRows ? 41 : 21);
     this._waterfallScroller.classList.toggle('small', !largeRows);
     this._waterfallHeaderElement.classList.toggle('small', !largeRows);
     this._waterfallColumn.setHeaderHeight(this._waterfallScroller.offsetTop);
   }
 
   /**
    * @param {!Element} element
    */
   show(element) {
     this._splitWidget.show(element);
@@ skipping 550 matching lines @@
 /**
  * @enum {string}
  */
 Network.NetworkLogViewColumns.WaterfallSortIds = {
   StartTime: 'startTime',
   ResponseTime: 'responseReceivedTime',
   EndTime: 'endTime',
   Duration: 'duration',
   Latency: 'latency'
 };