DevTools: add pie chart to the paint profiler overview.

Source/devtools/front_end/timeline/TimelineUIUtils.js

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  * Copyright (C) 2012 Intel 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.
@@ skipping 234 matching lines @@
     element.className = "timeline-aggregated-info";
 
     var total = 0;
     for (var categoryName in aggregatedStats)
         total += aggregatedStats[categoryName];
 
     function formatter(value)
     {
         return Number.millisToString(value, true);
     }
-    var pieChart = new WebInspector.PieChart(total, formatter);
+    var pieChart = new WebInspector.PieChart(100, formatter);
+    pieChart.setTotal(total);
     element.appendChild(pieChart.element);
     var footerElement = element.createChild("div", "timeline-aggregated-info-legend");
 
     // In case of self time, first add self, then children of the same category.
     if (selfCategory && selfTime) {
         // Self.
         pieChart.addSlice(selfTime, selfCategory.fillColorStop1);
         var rowElement = footerElement.createChild("div");
         rowElement.createChild("div", "timeline-aggregated-category timeline-" + selfCategory.name);
         rowElement.createTextChild(WebInspector.UIString("%s %s (Self)", formatter(selfTime), selfCategory.title));
@@ skipping 301 matching lines @@
         for (var i = 0; i < stackTrace.length; ++i) {
             var stackFrame = stackTrace[i];
             var row = stackTraceElement.createChild("div");
             row.createTextChild(stackFrame.functionName || WebInspector.UIString("(anonymous function)"));
             row.createTextChild(" @ ");
             var urlElement = this._linkifier.linkifyScriptLocation(this._target, stackFrame.scriptId, stackFrame.url, stackFrame.lineNumber - 1, stackFrame.columnNumber - 1);
             row.appendChild(urlElement);
         }
     }
 }