DevTools: Rename WI.Color's toString(format) -> asString(format)

Source/devtools/front_end/timeline/TimelineFlameChart.js

 /*
  * Copyright (C) 2014 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 368 matching lines @@
         if (event.name === WebInspector.TimelineModel.RecordType.JSFrame)
             return this._timelineData.entryLevels[entryIndex] % 2 ? "#efb320" : "#fcc02d";
         var category = WebInspector.TimelineUIUtils.eventStyle(event).category;
         if (WebInspector.TracingModel.isAsyncPhase(event.phase)) {
             if (event.category === WebInspector.TracingModel.ConsoleEventCategory)
                 return WebInspector.TimelineFlameChartDataProvider.consoleEventsColorGenerator().colorForID(event.name);
             var color = this._asyncColorByCategory[category.name];
             if (color)
                 return color;
             var parsedColor = WebInspector.Color.parse(category.fillColorStop1);
-            color = parsedColor.setAlpha(0.7).toString(WebInspector.Color.Format.RGBA) || "";
+            color = parsedColor.setAlpha(0.7).asString(WebInspector.Color.Format.RGBA) || "";
             this._asyncColorByCategory[category.name] = color;
             return color;
         }
         return category.fillColorStop1;
     },
 
     /**
      * @param {number} entryIndex
      * @param {!CanvasRenderingContext2D} context
      * @param {?string} text
@@ skipping 400 matching lines @@
 /**
   * @constructor
   * @param {!WebInspector.TimelineSelection} selection
   * @param {number} entryIndex
   */
 WebInspector.TimelineFlameChart.Selection = function(selection, entryIndex)
 {
     this.timelineSelection = selection;
     this.entryIndex = entryIndex;
 }