Timeline: do not imply event.thread.target is the main target

Source/devtools/front_end/timeline/TimelineFlameChart.js

 /*
  * Copyright (C) 2014 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 93 matching lines @@
      */
     entryTitle: function(entryIndex)
     {
         var event = this._entryEvents[entryIndex];
         if (event) {
             if (event.phase === WebInspector.TracingModel.Phase.AsyncStepInto || event.phase === WebInspector.TracingModel.Phase.AsyncStepPast)
                 return event.name + ":" + event.args["step"];
 
             var name = WebInspector.TimelineUIUtils.eventStyle(event).title;
             // TODO(yurys): support event dividers
-            var details = WebInspector.TimelineUIUtils.buildDetailsNodeForTraceEvent(event, this._linkifier);
+            var details = WebInspector.TimelineUIUtils.buildDetailsNodeForTraceEvent(event, this._model.target(), this._linkifier);
             if (event.name === WebInspector.TimelineModel.RecordType.JSFrame && details)
                 return details.textContent;
             return details ? WebInspector.UIString("%s (%s)", name, details.textContent) : name;
         }
         var title = this._entryIndexToTitle[entryIndex];
         if (!title) {
             title = WebInspector.UIString("Unexpected entryIndex %d", entryIndex);
             console.error(title);
         }
         return title;
@@ skipping 663 matching lines @@
 /**
   * @constructor
   * @param {!WebInspector.TimelineSelection} selection
   * @param {number} entryIndex
   */
 WebInspector.TimelineFlameChart.Selection = function(selection, entryIndex)
 {
     this.timelineSelection = selection;
     this.entryIndex = entryIndex;
 }