Add Server-Timing support to devtools

third_party/WebKit/Source/devtools/front_end/network/RequestTimingView.js

 /*
  * Copyright (C) 2010 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 266 matching lines @@
         cell.colSpan = 3;
         cell.createTextChild(WebInspector.UIString("CAUTION: request is not finished yet!"));
     }
 
     var footer = tableElement.createChild("tr", "network-timing-footer");
     var note = footer.createChild("td");
     note.colSpan = 2;
     note.appendChild(WebInspector.linkifyDocumentationURLAsNode("profile/network-performance/resource-loading#view-network-timing-details-for-a-specific-resource", WebInspector.UIString("Explanation")));
     footer.createChild("td").createTextChild(Number.secondsToString(totalDuration, true));
 
+    var serverTimings = request.serverTimings;
+    if (!serverTimings)
+        return tableElement;
+
+    var breakElement = tableElement.createChild("tr", "network-timing-table-header").createChild("td");
+    breakElement.colSpan = 3;
+    breakElement.createChild("hr", "break");
+    var serverHeader = tableElement.createChild("tr", "network-timing-table-header");
+    serverHeader.createChild("td").createTextChild(WebInspector.UIString("Server Timing"));
+    serverHeader.createChild("td");
+    serverHeader.createChild("td").createTextChild(WebInspector.UIString("TIME"));
+
+    var colorGenerator = new WebInspector.FlameChart.ColorGenerator(
+        { min: 0, max: 360, count:36 },
+        { min: 50, max: 80 },
+        80
+    );
+
+    /**
+     * @param {!WebInspector.ServerTiming} serverTiming
+     * @param {number} right
+     */
+    function addTiming(serverTiming, right)
+    {
+        var isTotal = serverTiming.metric.toLowerCase() === "total";
+        var tr = tableElement.createChild("tr", isTotal ? "network-timing-footer" : "");
+        var metric = tr.createChild("td", "network-timing-metric");
+        metric.createTextChild(serverTiming.description || serverTiming.metric);
+        var row = tr.createChild("td").createChild("div", "network-timing-row");
+        var left = scale * (endTime - startTime - serverTiming.value);
+        if (serverTiming.value && left >= 0) { // don't chart values too big or too small
+            var bar = row.createChild("span", "network-timing-bar server-timing");
+            bar.style.left = left + "%";
+            bar.style.right = right + "%";
+            bar.textContent = "\u200B"; // Important for 0-time items to have 0 width.
+            if (!isTotal)
+                bar.style.backgroundColor = colorGenerator.colorForID(serverTiming.metric);
+        }
+        var label = tr.createChild("td").createChild("div", "network-timing-bar-title");
+        if (typeof serverTiming.value === "number") // a metric timing value is optional
+            label.textContent = Number.secondsToString(serverTiming.value, true);
+    }
+
+    serverTimings.filter(item => item.metric.toLowerCase() !== "total").forEach(item => addTiming(item, right));

[caseq, 2016/08/08 17:12:56]

let's have right explicitly computed somewhere on top level. relying on a
variable definition within the loop is confusing.

+    serverTimings.filter(item => item.metric.toLowerCase() === "total").forEach(item => addTiming(item, right));
+
     return tableElement;
 
     /**
      * param {string} title
      */
     function createHeader(title)
     {
         var dataHeader = tableElement.createChild("tr", "network-timing-table-header");
         dataHeader.createChild("td").createTextChild(title);
         dataHeader.createChild("td").createTextChild("");
         dataHeader.createChild("td").createTextChild(WebInspector.UIString("TIME"));
         return dataHeader;
     }
 }