Remove old tracing code now that it has moved to third_party.

chrome/browser/resources/tracing/test_utils.js

-// Copyright (c) 2012 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.
-
-/**
- * @fileoverview Helper functions for use in tracing tests.
- */
-
-
-/**
- * goog.testing.assertion's assertEquals tweaked to do equality-to-a-constant.
- * @param {*} a First value.
- * @param {*} b Second value.
- */
-function assertAlmostEquals(a, b) {
-  _validateArguments(2, arguments);
-  var var1 = nonCommentArg(1, 2, arguments);
-  var var2 = nonCommentArg(2, 2, arguments);
-  _assert(commentArg(2, arguments), Math.abs(var1 - var2) < 0.00001,
-          'Expected ' + _displayStringForValue(var1) + ' but was ' +
-          _displayStringForValue(var2));
-}
-
-cr.define('test_utils', function() {
-  function getAsync(url, cb) {
-    var req = new XMLHttpRequest();
-    req.open('GET', url, true);
-    req.onreadystatechange = function(aEvt) {
-      if (req.readyState == 4) {
-        window.setTimeout(function() {
-          if (req.status == 200) {
-            cb(req.responseText);
-          } else {
-            console.log('Failed to load ' + url);
-          }
-        }, 0);
-      }
-    };
-    req.send(null);
-  }
-
-  function newAsyncSlice(start, duration, startThread, endThread) {
-    return newAsyncSliceNamed('a', start, duration, startThread, endThread);
-  }
-
-  function newAsyncSliceNamed(name, start, duration, startThread, endThread) {
-    var s = new tracing.TimelineAsyncSlice(name, 0, start);
-    s.duration = duration;
-    s.startThread = startThread;
-    s.endThread = endThread;
-    var subSlice = new tracing.TimelineAsyncSlice(name, 0, start);
-    subSlice.duration = duration;
-    subSlice.startThread = startThread;
-    subSlice.endThread = endThread;
-    s.subSlices = [subSlice];
-    return s;
-  }
-
-  function assertArrayishEquals(ref, val) {
-    assertEquals(ref.length, val.length);
-    for (var i = 0; i < ref.length; i++)
-      assertEquals(ref[i], val[i]);
-  }
-
-
-  return {
-    getAsync: getAsync,
-    newAsyncSlice: newAsyncSlice,
-    newAsyncSliceNamed: newAsyncSliceNamed,
-    assertArrayishEquals: assertArrayishEquals
-  };
-});