[Devtools] Prepare network log view for grouping support

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 139 matching lines @@
 
     /**
      * @param {!Event} event
      * @this {Network.NetworkLogViewColumns}
      */
     function handleContextMenu(event) {
       var node = this._waterfallColumn.getNodeFromPoint(event.offsetX, event.offsetY);
       if (!node)
         return;
       var contextMenu = new UI.ContextMenu(event);
-      this._networkLogView.handleContextMenuForRequest(contextMenu, node.request());
+      this._networkLogView.handleContextMenuForNode(contextMenu, node);
       contextMenu.show();
     }
   }
 
   /**
    * @param {boolean} shouldConsume
    * @param {!Event} event
    */
   _onMouseWheel(shouldConsume, event) {
     if (shouldConsume)
@@ skipping 20 matching lines @@
     }
   }
 
   _redrawWaterfallColumn() {
     if (!this._waterfallRequestsAreStale) {
       this._updateScrollerWidthIfNeeded();
       this._waterfallColumn.update(
           this._activeScroller.scrollTop, this._eventDividersShown ? this._eventDividers : undefined);
       return;
     }
-    var nodes = this._networkLogView.flatNodesList();
+    var nodes = this._networkLogView.flattenVisibleNodes();
     this._waterfallColumn.update(this._activeScroller.scrollTop, this._eventDividers, nodes);
   }
 
   /**
    * @param {?Network.NetworkDataGridNode} node
    * @param {boolean} highlightInitiatorChain
    */
   setHoveredNode(node, highlightInitiatorChain) {
     this._waterfallColumn.setHoveredNode(node, highlightInitiatorChain);
   }
@@ skipping 605 matching lines @@
 /**
  * @enum {string}
  */
 Network.NetworkLogViewColumns.WaterfallSortIds = {
   StartTime: 'startTime',
   ResponseTime: 'responseReceivedTime',
   EndTime: 'endTime',
   Duration: 'duration',
   Latency: 'latency'
 };