DevTools: Make the colors for the same URL be the same for all recording.

third_party/WebKit/Source/devtools/front_end/ui_lazy/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 292 matching lines @@
 }
 
 WebInspector.FlameChart.Events = {
     EntrySelected: "EntrySelected"
 }
 
 
 /**
  * @constructor
  * @param {!{min: number, max: number}|number=} hueSpace
- * @param {!{min: number, max: number, count: number}|number=} satSpace
- * @param {!{min: number, max: number, count: number}|number=} lightnessSpace
- * @param {!{min: number, max: number, count: number}|number=} alphaSpace
+ * @param {!{min: number, max: number, count: (number|undefined)}|number=} satSpace
+ * @param {!{min: number, max: number, count: (number|undefined)}|number=} lightnessSpace
+ * @param {!{min: number, max: number, count: (number|undefined)}|number=} alphaSpace
  */
 WebInspector.FlameChart.ColorGenerator = function(hueSpace, satSpace, lightnessSpace, alphaSpace)
 {
     this._hueSpace = hueSpace || { min: 0, max: 360 };
     this._satSpace = satSpace || 67;
     this._lightnessSpace = lightnessSpace || 80;
     this._alphaSpace = alphaSpace || 1;
     /** @type {!Map<string, string>} */
     this._colors = new Map();
 }
@@ skipping 22 matching lines @@
         return color;
     },
 
     /**
      * @param {string} id
      * @return {string}
      */
     _generateColorForID: function(id)
     {
         var hash = String.hashCode(id);
-        var h = this._indexToDistinctValueInSpace(this._colors.size, this._hueSpace);
-        var s = this._indexToValueInSpace(hash, this._satSpace);
-        var l = this._indexToValueInSpace(hash, this._lightnessSpace);
-        var a = this._indexToValueInSpace(hash, this._alphaSpace);
+        var h = this._indexToValueInSpace(hash, this._hueSpace);
+        var s = this._indexToValueInSpace(hash >> 8, this._satSpace);
+        var l = this._indexToValueInSpace(hash >> 16, this._lightnessSpace);
+        var a = this._indexToValueInSpace(hash >> 24, this._alphaSpace);
         return "hsla(" + h + ", " + s + "%, " + l + "%, " + a + ")";
     },
 
     /**
      * @param {number} index
-     * @param {!{min: number, max: number, count: number}|number} space
+     * @param {!{min: number, max: number, count: (number|undefined)}|number} space
      * @return {number}
      */
     _indexToValueInSpace: function(index, space)
     {
         if (typeof space === "number")
             return space;
-        index %= space.count;
-        return space.min + Math.floor(index / (space.count - 1) * (space.max - space.min));
-    },
-
-    /**
-     * @param {number} index
-     * @param {!{min: number, max: number}|number} space
-     * @return {number}
-     */
-    _indexToDistinctValueInSpace: function(index, space)
-    {
-        if (typeof space === "number")
-            return space;
-        index |= 0;
-        var result = 0;
-        var count = 0;
-        // Reverse bits in index.
-        do {
-            result = (result << 1) | (index & 1);
-            index >>= 1;
-            ++count;
-        } while (index);
-        result /= 1 << count;
-        return space.min + Math.floor(result * (space.max - space.min));
+        var count = space.count || space.max - space.min;
+        index %= count;
+        return space.min + Math.floor(index / (count - 1) * (space.max - space.min));
     }
 }
 
 
 /**
  * @constructor
  * @implements {WebInspector.TimelineGrid.Calculator}
  */
 WebInspector.FlameChart.Calculator = function()
 {
@@ skipping 1563 matching lines @@
         this.update();
     },
 
     _enabled: function()
     {
         return this._rawTimelineDataLength !== 0;
     },
 
     __proto__: WebInspector.HBox.prototype
 }