DevTools: Avoid private member access in non-profiler code

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 20 matching lines @@
      * @param {number} windowStartTime
      * @param {number} windowEndTime
      */
     requestWindowTimes: function(windowStartTime, windowEndTime)
     {
         this._delegate.requestWindowTimes(windowStartTime, windowEndTime);
     },
 
     wasShown: function()
     {
-        this._mainView._scheduleUpdate();
+        this._mainView.scheduleUpdate();
     },
 
     /**
      * @return {!WebInspector.View}
      */
     view: function()
     {
         return this;
     },
 
     dispose: function()
     {
     },
 
     reset: function()
     {
         this._dataProvider.reset();
         this._mainView.setWindowTimes(0, Infinity);
     },
 
     /**
      * @param {?RegExp} textFilter
      */
     refreshRecords: function(textFilter)
     {
         this._dataProvider.reset();
-        this._mainView._scheduleUpdate();
+        this._mainView.scheduleUpdate();
     },
 
     /**
      * @param {!WebInspector.TimelineModel.Record} record
      */
     addRecord: function(record) {},
 
     /**
      * @param {?WebInspector.TimelineModel.Record} record
      * @param {string=} regex
@@ skipping 51 matching lines @@
          */
         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(record.args["snapshot"]["skp64"], appendPreviewAndshowDetails.bind(this));
+            WebInspector.TracingTimelineUIUtils.buildPicturePreviewContent(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);
             contentHelper.appendElementRow(WebInspector.UIString("Layer tree"), link);
             // Fall-through intended.
         default:
             this._delegate.showInDetails(WebInspector.UIString("Selected Event"), contentHelper.element);
@@ skipping 396 matching lines @@
     /**
      * @param {string} string
      * @return {string}
      */
     colorForString: function(string)
     {
         var hash = WebInspector.TraceViewPalette._stringHash(string);
         return this._palette[hash % this._palette.length];
     }
 };