[Devtools] Fixed contextmenu double showing for network requests

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 479 matching lines @@
          * @param {!Event} event
          * @this {WebInspector.NetworkLogViewColumns}
          */
         function handleContextMenu(event)
         {
             var request = this._timelineColumn.getRequestFromPoint(event.offsetX, event.offsetY);
             if (!request)
                 return;
             var contextMenu = new WebInspector.ContextMenu(event);
             this._networkLogView.handleContextMenuForRequest(contextMenu, request);
+            contextMenu.show();
         }
     },
 
     /**
      * @param {boolean} shouldConsume
      * @param {!Event} event
      */
     _onMouseWheel: function(shouldConsume, event)
     {
         if (shouldConsume)
@@ skipping 606 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);
     }
 };