DevTools: Avoid private member access in non-profiler code

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 827 matching lines @@
     {
         this._delegate.requestWindowTimes(windowStartTime, windowEndTime);
     },
 
     /**
      * @param {?RegExp} textFilter
      */
     refreshRecords: function(textFilter)
     {
         this._dataProvider.reset();
-        this._mainView._scheduleUpdate();
+        this._mainView.scheduleUpdate();
     },
 
     wasShown: function()
     {
-        this._mainView._scheduleUpdate();
+        this._mainView.scheduleUpdate();
     },
 
 
     /**
      * @return {!WebInspector.View}
      */
     view: function()
     {
         return this;
     },
@@ skipping 17 matching lines @@
      */
     addRecord: function(record)
     {
         this._dataProvider.reset();
         if (this._automaticallySizeWindow) {
             var minimumRecordTime = this._model.minimumRecordTime();
             if (record.startTime() > (minimumRecordTime + 1000)) {
                 this._automaticallySizeWindow = false;
                 this._delegate.requestWindowTimes(minimumRecordTime, minimumRecordTime + 1000);
             }
-            this._mainView._scheduleUpdate();
+            this._mainView.scheduleUpdate();
         } else {
             if (!this._pendingUpdateTimer)
                 this._pendingUpdateTimer = window.setTimeout(this._updateOnAddRecord.bind(this), 300);
         }
     },
 
     _updateOnAddRecord: function()
     {
         delete this._pendingUpdateTimer;
-        this._mainView._scheduleUpdate();
+        this._mainView.scheduleUpdate();
     },
 
     /**
      * @param {number} startTime
      * @param {number} endTime
      */
     setWindowTimes: function(startTime, endTime)
     {
         this._mainView.setWindowTimes(startTime, endTime);
         this._delegate.select(null);
@@ skipping 59 matching lines @@
      * @param {number} entryIndex
      * @return {?WebInspector.TimelineSelection}
      */
     createSelection: function(entryIndex) { },
     /**
      * @param {?WebInspector.TimelineSelection} selection
      * @return {number}
      */
     entryIndexForSelection: function(selection) { }
 }