[DevTools] Host paint profiles in PaintProfilerModel

third_party/WebKit/Source/devtools/front_end/timeline/TimelineDetailsView.js

 // Copyright 2017 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.
 
 /**
  * @unrestricted
  */
 Timeline.TimelineDetailsView = class extends UI.VBox {
   /**
    * @param {!Array<!TimelineModel.TimelineModelFilter>} filters
@@ skipping 186 matching lines @@
     this._setContent(content);
     if (event.name === TimelineModel.TimelineModel.RecordType.Paint ||
         event.name === TimelineModel.TimelineModel.RecordType.RasterTask)
       this._showEventInPaintProfiler(event);
   }
 
   /**
    * @param {!SDK.TracingModel.Event} event
    */
   _showEventInPaintProfiler(event) {
-    const target = SDK.targetManager.mainTarget();
-    if (!target)
+    const paintProfilerModel = SDK.targetManager.models(SDK.PaintProfilerModel)[0];
+    if (!paintProfilerModel)
       return;
     const paintProfilerView = this._paintProfilerView();
-    const hasProfileData = paintProfilerView.setEvent(target, event);
+    const hasProfileData = paintProfilerView.setEvent(paintProfilerModel, event);
     if (!hasProfileData)
       return;
     if (this._tabbedPane.hasTab(Timeline.TimelineDetailsView.Tab.PaintProfiler))
       return;
     this._appendTab(
         Timeline.TimelineDetailsView.Tab.PaintProfiler, Common.UIString('Paint Profiler'), paintProfilerView);
   }
 
   /**
    * @param {number} startTime
    * @param {number} endTime
    */
   _updateSelectedRangeStats(startTime, endTime) {
     if (this._model)
       this._setContent(Timeline.TimelineUIUtils.buildRangeStats(this._model.timelineModel(), startTime, endTime));
   }
 };
 
 /**
  * @enum {string}
  */
 Timeline.TimelineDetailsView.Tab = {
   Details: 'Details',
   EventLog: 'EventLog',
   CallTree: 'CallTree',
   BottomUp: 'BottomUp',
   PaintProfiler: 'PaintProfiler',
   LayerViewer: 'LayerViewer'
 };