DevTools: draw load/first paint marks as tall vertical delimiters

Source/devtools/front_end/timeline/TracingTimelineUIUtils.js

 // Copyright 2014 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
  * @extends {WebInspector.TimelineUIUtils}
  */
 WebInspector.TracingTimelineUIUtils = function()
 {
@@ skipping 323 matching lines @@
     case recordTypes.MarkDOMContent:
     case recordTypes.MarkLoad:
         return event.args["data"]["isMainFrame"];
     default:
         return false;
     }
 }
 
 /**
  * @param {!WebInspector.TracingModel.Event} event
+ * @return {boolean}
+ */
+WebInspector.TracingTimelineUIUtils.isTallMarkerEvent = function(event)
+{
+    return event.name !== WebInspector.TracingTimelineModel.RecordType.TimeStamp;
+}
+
+/**
+ * @param {!WebInspector.TracingModel.Event} event
  * @param {!WebInspector.Linkifier} linkifier
  * @return {?Node}
  */
 WebInspector.TracingTimelineUIUtils.buildDetailsNodeForTraceEvent = function(event, linkifier)
 {
     var recordType = WebInspector.TracingTimelineModel.RecordType;
     var target = event.thread.target();
     var details;
     var detailsText;
     var eventData = event.args["data"];
@@ skipping 626 matching lines @@
     return result;
 }
 
 /**
  * @return {!WebInspector.TracingTimelineModel.Filter}
  */
 WebInspector.TracingTimelineUIUtils.hiddenEventsFilter = function()
 {
     return new WebInspector.TracingTimelineModel.InclusiveEventNameFilter(WebInspector.TracingTimelineUIUtils._visibleTypes());
 }