[Devtools] Fixed Scroll issues with network exp timeline

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

 /*
  * Copyright (C) 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2008, 2009 Anthony Ricaud <rik@webkit.org>
  * Copyright (C) 2011 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
@@ skipping 597 matching lines @@
         var data = /** @type {number} */ (event.data);
         if (data) {
             this._mainRequestDOMContentLoadedTime = data;
             this._columns.addEventDividers([data], "network-blue-divider");
         }
     },
 
     wasShown: function()
     {
         this._refreshIfNeeded();
+        this._columns.wasShown();
     },
 
     willHide: function()
     {
         this._columns.willHide();
     },
 
     _refresh: function()
     {
         this._needsRefresh = false;
@@ skipping 1141 matching lines @@
  * @return {boolean}
  */
 WebInspector.NetworkLogView._requestTimeFilter = function(windowStart, windowEnd, request)
 {
     if (request.issueTime() > windowEnd)
         return false;
     if (request.endTime !== -1 && request.endTime < windowStart)
         return false;
     return true;
 };