Support submillisecond times on FlameChart

Source/devtools/front_end/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 430 matching lines @@
 
         if (entryIndex === -1 || this._timelineData.entries[entryIndex].node.scriptId === "0")
             this._canvas.style.cursor = "default";
         else
             this._canvas.style.cursor = "pointer";
 
         this._highlightedEntryIndex = entryIndex;
         this._scheduleUpdate();
     },
 
+    _millisecondsToString: function(ms)
+    {
+        if (ms === 0)
+            return "0";
+        if (ms < 1000)
+            return WebInspector.UIString("%.1f\u2009ms", ms);
+        return Number.secondsToString(ms / 1000, true);
+    },
+
     _prepareHighlightedEntryInfo: function()
     {
         if (this._isDragging)
             return null;
         var entry = this._timelineData.entries[this._highlightedEntryIndex];
         if (!entry)
             return null;
         var node = entry.node;
         if (!node)
             return null;
 
         var entryInfo = [];
         function pushEntryInfoRow(title, text)
         {
             var row = {};
             row.title = title;
             row.text = text;
             entryInfo.push(row);
         }
 
         pushEntryInfoRow(WebInspector.UIString("Name"), node.functionName);
         if (this._cpuProfileView.samples) {
-            pushEntryInfoRow(WebInspector.UIString("Self time"), Number.secondsToString(entry.selfTime / 1000, true));
-            pushEntryInfoRow(WebInspector.UIString("Total time"), Number.secondsToString(entry.duration / 1000, true));
+            var rate = this._cpuProfileView.samplesPerMs;
+            var selfTime = this._millisecondsToString(entry.selfTime / rate);
+            var totalTime = this._millisecondsToString(entry.duration / rate);
+            pushEntryInfoRow(WebInspector.UIString("Self time"), selfTime);
+            pushEntryInfoRow(WebInspector.UIString("Total time"), totalTime);
         }
         if (node.url)
             pushEntryInfoRow(WebInspector.UIString("URL"), node.url + ":" + node.lineNumber);
         pushEntryInfoRow(WebInspector.UIString("Aggregated self time"), Number.secondsToString(node.selfTime / 1000, true));
         pushEntryInfoRow(WebInspector.UIString("Aggregated total time"), Number.secondsToString(node.totalTime / 1000, true));
         return entryInfo;
     },
 
     _onClick: function(e)
     {
@@ skipping 309 matching lines @@
         this._timelineGrid.updateDividers(this._calculator);
         this._overviewGrid.updateDividers(this._overviewCalculator);
         if (this._updateOverviewCanvas) {
             this._drawOverviewCanvas(this._overviewContainer.clientWidth, this._overviewContainer.clientHeight - 20);
             this._updateOverviewCanvas = false;
         }
     },
 
     __proto__: WebInspector.View.prototype
 };