[Devtools] Added default width to canvas timeline in network panel exp

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.
 
 /**
  * @constructor
  * @param {!WebInspector.NetworkLogView} networkLogView
  * @param {!WebInspector.NetworkTransferTimeCalculator} timeCalculator
  * @param {!WebInspector.NetworkTransferDurationCalculator} durationCalculator
  * @param {!WebInspector.Setting} networkLogLargeRowsSetting
@@ skipping 434 matching lines @@
         this._timelineGrid.element.classList.add("network-timeline-grid");
         if (!Runtime.experiments.isEnabled("canvasNetworkTimeline"))
             this._dataGrid.element.appendChild(this._timelineGrid.element);
 
         this._setupDropdownColumns();
 
         this._activeTimelineSortId = WebInspector.NetworkLogViewColumns.TimelineSortIds.StartTime;
         this._dataGrid.markColumnAsSortedBy(WebInspector.NetworkLogViewColumns._initialSortColumn, WebInspector.DataGrid.Order.Ascending);
 
         if (Runtime.experiments.isEnabled("canvasNetworkTimeline")) {
-            this._splitWidget = new WebInspector.SplitWidget(true, false, "networkPanelSplitViewTimeline");
-            this._splitWidget.setSidebarWidget(this._dataGrid.asWidget());
+            this._splitWidget = new WebInspector.SplitWidget(true, true, "networkPanelSplitViewTimeline", 200);
+            this._splitWidget.setMainWidget(this._dataGrid.asWidget());
         }
     },
 
     _setupTimeline: function()
     {
         this._timelineColumn = new WebInspector.NetworkTimelineColumn(this._networkLogView.rowHeight(), this._networkLogView.calculator());
 
         this._timelineColumn.element.addEventListener("contextmenu", handleContextMenu.bind(this));
         this._timelineColumn.element.addEventListener("mousewheel", this._onMouseWheel.bind(this, false), { passive: true });
         this._dataGridScroller.addEventListener("mousewheel",this._onMouseWheel.bind(this, true), true);
 
         this._timelineColumn.element.addEventListener("mousemove", event => this._networkLogView.setHoveredRequest(this._timelineColumn.getRequestFromPoint(event.offsetX, event.offsetY + event.target.offsetTop)), true);
         this._timelineColumn.element.addEventListener("mouseleave", this._networkLogView.setHoveredRequest.bind(this._networkLogView, null), true);
 
         this._timelineScroller = this._timelineColumn.contentElement.createChild("div", "network-timeline-v-scroll");
         this._timelineScroller.addEventListener("scroll", this._syncScrollers.bind(this), { passive: true });
         this._timelineScrollerContent = this._timelineScroller.createChild("div", "network-timeline-v-scroll-content");
 
         this._dataGrid.addEventListener(WebInspector.DataGrid.Events.PaddingChanged, () => {
             this._timelineScrollerWidthIsStale = true;
             this._syncScrollers();
         });
         this._dataGrid.addEventListener(WebInspector.ViewportDataGrid.Events.ViewportCalculated, this._redrawTimelineColumn.bind(this));
 
 
         this._createTimelineHeader();
         this._timelineColumn.contentElement.classList.add("network-timeline-view");
 
-        this._splitWidget.setMainWidget(this._timelineColumn);
+        this._splitWidget.setSidebarWidget(this._timelineColumn);
 
         this.switchViewMode(false);
 
         /**
          * @param {!Event} event
          * @this {WebInspector.NetworkLogViewColumns}
          */
         function handleContextMenu(event)
         {
             var request = this._timelineColumn.getRequestFromPoint(event.offsetX, event.offsetY);
@@ skipping 620 matching lines @@
     {
         if (Runtime.experiments.isEnabled("canvasNetworkTimeline")) {
             this._shownEventDividers.delete(WebInspector.NetworkLogViewColumns._filmStripDividerColor);
             this._redrawTimelineColumn();
             return;
         }
         for (var divider of this._eventDividers)
             divider.element.classList.toggle("network-frame-divider-selected", false);
     }
 };