DevTools: Remove redundant dependency on target from TimelineFrameModel

Source/devtools/front_end/timeline/TimelineTracingView.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
  * @implements {WebInspector.TimelineModeView}
  * @implements {WebInspector.FlameChartDelegate}
@@ skipping 99 matching lines @@
             this._delegate.showInDetails("", document.createTextNode(""));
             return;
         }
         var contentHelper = new WebInspector.TimelineDetailsContentHelper(null, null, false);
         contentHelper.appendTextRow(WebInspector.UIString("Name"), record.name);
         contentHelper.appendTextRow(WebInspector.UIString("Category"), record.category);
         contentHelper.appendTextRow(WebInspector.UIString("Start"), Number.millisToString(record.startTime - this._tracingModel.minimumRecordTime(), true));
         contentHelper.appendTextRow(WebInspector.UIString("Duration"), Number.millisToString(record.duration, true));
         if (!Object.isEmpty(record.args))
             contentHelper.appendElementRow(WebInspector.UIString("Arguments"), this._formatArguments(record.args));
-        /**
-         * @this {WebInspector.TimelineTracingView}
-         */
+
         function reveal()
         {
-            WebInspector.Revealer.reveal(new WebInspector.DeferredTracingLayerTree(this._tracingModel.target().weakReference(), record.args["snapshot"]["active_tree"]["root_layer"], record.args["snapshot"]["device_viewport_size"]));
+            WebInspector.Revealer.reveal(new WebInspector.DeferredTracingLayerTree(record.thread.target(), record.args["snapshot"]["active_tree"]["root_layer"], record.args["snapshot"]["device_viewport_size"]));
         }
         /**
          * @param {!Node=} node
          * @this {WebInspector.TimelineTracingView}
          */
         function appendPreviewAndShowDetails(node)
         {
             if (node)
                 contentHelper.appendElementRow("Preview", node);
             this._delegate.showInDetails(WebInspector.UIString("Selected Event"), contentHelper.element);
         }
         var recordTypes = WebInspector.TracingTimelineModel.RecordType;
         switch (record.name) {
         case recordTypes.PictureSnapshot:
             WebInspector.TracingTimelineUIUtils.buildPicturePreviewContent(this._tracingModel.target(), record.args["snapshot"]["skp64"], appendPreviewAndShowDetails.bind(this));
             break;
         case recordTypes.LayerTreeHostImplSnapshot:
             var link = document.createElement("span");
             link.classList.add("revealable-link");
             link.textContent = "show";
-            link.addEventListener("click", reveal.bind(this), false);
+            link.addEventListener("click", reveal, false);
             contentHelper.appendElementRow(WebInspector.UIString("Layer tree"), link);
             // Fall-through intended.
         default:
             this._delegate.showInDetails(WebInspector.UIString("Selected Event"), contentHelper.element);
         }
     },
 
     /**
      * @param {!Object} args
      * @return {!Element}
@@ skipping 390 matching lines @@
     /**
      * @param {string} string
      * @return {string}
      */
     colorForString: function(string)
     {
         var hash = WebInspector.TraceViewPalette._stringHash(string);
         return this._palette[hash % this._palette.length];
     }
 };