Add an initial implementation of net-internals inspector in javascript....

chrome/browser/resources/net_internals/timelineviewpainter.js

+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+var PaintTimelineView;
+
+(function() {
+
+PaintTimelineView = function(sourceEntries, node) {
+  addTextNode(node, 'TODO(eroman): Draw some sort of waterfall.');
+
+  addNode(node, 'br');
+  addNode(node, 'br');
+
+  addTextNode(node, 'Selected nodes (' + sourceEntries.length + '):');
+  addNode(node, 'br');
+
+}
+
+})();