Timeline: streamline flame chart views update logic

third_party/WebKit/Source/devtools/front_end/perf_ui/TimelineOverviewPane.js

 /*
  * Copyright (C) 2013 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 242 matching lines @@
     this._overviewCalculator.reset();
     this._overviewGrid.reset();
     this._overviewGrid.setResizeEnabled(false);
     this._overviewGrid.updateDividers(this._overviewCalculator);
     this._cursorEnabled = false;
     this._hideCursor();
     this._markers = new Map();
     for (var i = 0; i < this._overviewControls.length; ++i)
       this._overviewControls[i].reset();
     this._popoverHelper.hidePopover();
-    this._update();
+    this.scheduleUpdate();
   }
 
   /**
    * @param {!Event} event
    * @return {boolean}
    */
   _onClick(event) {
     for (var overviewControl of this._overviewControls) {
       if (overviewControl.onClick(event))
         return true;
@@ skipping 265 matching lines @@
    */
   onClick(event) {
     return false;
   }
 
   resetCanvas() {
     this._canvas.width = this.element.clientWidth * window.devicePixelRatio;
     this._canvas.height = this.element.clientHeight * window.devicePixelRatio;
   }
 };