Timeline: streamline flame chart views update logic

third_party/WebKit/Source/devtools/front_end/perf_ui/FlameChart.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 1183 matching lines @@
     this._draw(this._offsetWidth, this._offsetHeight);
     if (!this.isDragging())
       this._updateHighlight();
   }
 
   /**
    * @override
    */
   reset() {
     super.reset();
+    this._rawTimelineData = null;
+    this._rawTimelineDataLength = 0;
     this._highlightedMarkerIndex = -1;
     this._highlightedEntryIndex = -1;
     this._selectedEntryIndex = -1;
     /** @type {!Map<string,!Map<string,number>>} */
     this._textWidth = new Map();
-    this.update();
+    this.scheduleUpdate();
   }
 
   _enabled() {
     return this._rawTimelineDataLength !== 0;
   }
 };
 
 PerfUI.FlameChart.HeaderHeight = 15;
 
 PerfUI.FlameChart.MinimalTimeWindowMs = 0.5;
@@ skipping 300 matching lines @@
   }
 
   /**
    * @override
    * @return {number}
    */
   boundarySpan() {
     return this._maximumBoundaries - this._minimumBoundaries;
   }
 };