DevTools: Highlight DOM node on hover in flamechart.

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 147 matching lines @@
   }
 
   /**
    * @param {number} entryIndex
    */
   highlightEntry(entryIndex) {
     if (this._highlightedEntryIndex === entryIndex)
       return;
     this._highlightedEntryIndex = entryIndex;
     this._updateElementPosition(this._highlightElement, this._highlightedEntryIndex);
+    this._dataProvider.highlightEntry(entryIndex);
   }
 
   hideHighlight() {
     this._entryInfo.removeChildren();
     this._highlightedEntryIndex = -1;
     this._updateElementPosition(this._highlightElement, this._highlightedEntryIndex);
+    this._dataProvider.highlightEntry(-1);
   }
 
   _resetCanvas() {
     var ratio = window.devicePixelRatio;
     this._canvas.width = this._offsetWidth * ratio;
     this._canvas.height = this._offsetHeight * ratio;
     this._canvas.style.width = this._offsetWidth + 'px';
     this._canvas.style.height = this._offsetHeight + 'px';
   }
 
@@ skipping 1149 matching lines @@
    * @param {number} barWidth
    * @param {number} barHeight
    * @param {number} unclippedBarX
    * @param {number} timeToPixels
    * @return {boolean}
    */
   decorateEntry(entryIndex, context, text, barX, barY, barWidth, barHeight, unclippedBarX, timeToPixels) {},
 
   /**
    * @param {number} entryIndex
+   */
+  highlightEntry(entryIndex) {},
+
+  /**
+   * @param {number} entryIndex
    * @return {boolean}
    */
   forceDecoration(entryIndex) {},
 
   /**
    * @param {number} entryIndex
    * @return {string}
    */
   textColor(entryIndex) {},
 };
@@ skipping 169 matching lines @@
   }
 
   /**
    * @override
    * @return {number}
    */
   boundarySpan() {
     return this._maximumBoundaries - this._minimumBoundaries;
   }
 };