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diff --git a/contexts/data/lib/closure-library/closure/goog/testing/performancetimer.js b/contexts/data/lib/closure-library/closure/goog/testing/performancetimer.js
deleted file mode 100644
index 1479ae3..0000000
--- a/contexts/data/lib/closure-library/closure/goog/testing/performancetimer.js
+++ /dev/null
@@ -1,281 +0,0 @@
-// Copyright 2008 The Closure Library Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS-IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-/**
- * @fileoverview Performance timer.
- *
- * {@see goog.testing.benchmark} for an easy way to use this functionality.
- *
- * @author attila@google.com (Attila Bodis)
- */
-
-goog.provide('goog.testing.PerformanceTimer');
-goog.provide('goog.testing.PerformanceTimer.Task');
-
-goog.require('goog.array');
-goog.require('goog.math');
-
-
-
-/**
- * Creates a performance timer that runs test functions a number of times to
- * generate timing samples, and provides performance statistics (minimum,
- * maximum, average, and standard deviation).
- * @param {number=} opt_numSamples Number of times to run the test function;
- *     defaults to 10.
- * @param {number=} opt_timeoutInterval Number of milliseconds after which the
- *     test is to be aborted; defaults to 5 seconds (5,000ms).
- * @constructor
- */
-goog.testing.PerformanceTimer = function(opt_numSamples, opt_timeoutInterval) {
-  /**
-   * Number of times the test function is to be run; defaults to 10.
-   * @type {number}
-   * @private
-   */
-  this.numSamples_ = opt_numSamples || 10;
-
-  /**
-   * Number of milliseconds after which the test is to be aborted; defaults to
-   * 5,000ms.
-   * @type {number}
-   * @private
-   */
-  this.timeoutInterval_ = opt_timeoutInterval || 5000;
-
-  /**
-   * Whether to discard outliers (i.e. the smallest and the largest values)
-   * from the sample set before computing statistics.  Defaults to false.
-   * @type {boolean}
-   * @private
-   */
-  this.discardOutliers_ = false;
-};
-
-
-/**
- * @return {number} The number of times the test function will be run.
- */
-goog.testing.PerformanceTimer.prototype.getNumSamples = function() {
-  return this.numSamples_;
-};
-
-
-/**
- * Sets the number of times the test function will be run.
- * @param {number} numSamples Number of times to run the test function.
- */
-goog.testing.PerformanceTimer.prototype.setNumSamples = function(numSamples) {
-  this.numSamples_ = numSamples;
-};
-
-
-/**
- * @return {number} The number of milliseconds after which the test times out.
- */
-goog.testing.PerformanceTimer.prototype.getTimeoutInterval = function() {
-  return this.timeoutInterval_;
-};
-
-
-/**
- * Sets the number of milliseconds after which the test times out.
- * @param {number} timeoutInterval Timeout interval in ms.
- */
-goog.testing.PerformanceTimer.prototype.setTimeoutInterval = function(
-    timeoutInterval) {
-  this.timeoutInterval_ = timeoutInterval;
-};
-
-
-/**
- * Sets whether to ignore the smallest and the largest values when computing
- * stats.
- * @param {boolean} discard Whether to discard outlier values.
- */
-goog.testing.PerformanceTimer.prototype.setDiscardOutliers = function(discard) {
-  this.discardOutliers_ = discard;
-};
-
-
-/**
- * @return {boolean} Whether outlier values are discarded prior to computing
- *     stats.
- */
-goog.testing.PerformanceTimer.prototype.isDiscardOutliers = function() {
-  return this.discardOutliers_;
-};
-
-
-/**
- * Executes the test function the required number of times (or until the
- * test run exceeds the timeout interval, whichever comes first).  Returns
- * an object containing the following:
- * <pre>
- *   {
- *     'average': average execution time (ms)
- *     'count': number of executions (may be fewer than expected due to timeout)
- *     'maximum': longest execution time (ms)
- *     'minimum': shortest execution time (ms)
- *     'standardDeviation': sample standard deviation (ms)
- *     'total': total execution time (ms)
- *   }
- * </pre>
- *
- * @param {Function} testFn Test function whose performance is to
- *     be measured.
- * @return {Object} Object containing performance stats.
- */
-goog.testing.PerformanceTimer.prototype.run = function(testFn) {
-  return this.runTask(new goog.testing.PerformanceTimer.Task(
-      (/** @type {function()} */ testFn)));
-};
-
-
-/**
- * Executes the test function of the specified task as described in
- * {@code run}. In addition, if specified, the set up and tear down functions of
- * the task are invoked before and after each invocation of the test function.
- * @see goog.testing.PerformanceTimer#run
- * @param {goog.testing.PerformanceTimer.Task} task A task describing the test
- *     function to invoke.
- * @return {Object} Object containing performance stats.
- */
-goog.testing.PerformanceTimer.prototype.runTask = function(task) {
-  var samples = [];
-  var testStart = goog.now();
-  var totalRunTime = 0;
-
-  var testFn = task.getTest();
-  var setUpFn = task.getSetUp();
-  var tearDownFn = task.getTearDown();
-
-  for (var i = 0; i < this.numSamples_ && totalRunTime <= this.timeoutInterval_;
-       i++) {
-    setUpFn();
-    var sampleStart = goog.now();
-    testFn();
-    var sampleEnd = goog.now();
-    tearDownFn();
-    samples[i] = sampleEnd - sampleStart;
-    totalRunTime = sampleEnd - testStart;
-  }
-
-  if (this.discardOutliers_ && samples.length > 2) {
-    goog.array.remove(samples, Math.min.apply(null, samples));
-    goog.array.remove(samples, Math.max.apply(null, samples));
-  }
-
-  return goog.testing.PerformanceTimer.createResults(samples);
-};
-
-
-/**
- * Creates a performance timer results object by analyzing a given array of
- * sample timings.
- * @param {Array.<number>} samples The samples to analyze.
- * @return {Object} Object containing performance stats.
- */
-goog.testing.PerformanceTimer.createResults = function(samples) {
-  return {
-    'average': goog.math.average.apply(null, samples),
-    'count': samples.length,
-    'maximum': Math.max.apply(null, samples),
-    'minimum': Math.min.apply(null, samples),
-    'standardDeviation': goog.math.standardDeviation.apply(null, samples),
-    'total': goog.math.sum.apply(null, samples)
-  };
-};
-
-
-
-/**
- * A task for the performance timer to measure. Callers can specify optional
- * setUp and tearDown methods to control state before and after each run of the
- * test function.
- * @param {function()} test Test function whose performance is to be measured.
- * @constructor
- */
-goog.testing.PerformanceTimer.Task = function(test) {
-  /**
-   * The test function to time.
-   * @type {function()}
-   * @private
-   */
-  this.test_ = test;
-};
-
-
-/**
- * An optional set up function to run before each invocation of the test
- * function.
- * @type {function()}
- * @private
- */
-goog.testing.PerformanceTimer.Task.prototype.setUp_ = goog.nullFunction;
-
-
-/**
- * An optional tear down function to run after each invocation of the test
- * function.
- * @type {function()}
- * @private
- */
-goog.testing.PerformanceTimer.Task.prototype.tearDown_ = goog.nullFunction;
-
-
-/** @return {function()} The test function to time. */
-goog.testing.PerformanceTimer.Task.prototype.getTest = function() {
-  return this.test_;
-};
-
-
-/**
- * Specifies a set up function to be invoked before each invocation of the test
- * function.
- * @param {function()} setUp The set up function.
- * @return {goog.testing.PerformanceTimer.Task} This task.
- */
-goog.testing.PerformanceTimer.Task.prototype.withSetUp = function(setUp) {
-  this.setUp_ = setUp;
-  return this;
-};
-
-
-/**
- * @return {function()} The set up function or null if none was specified.
- */
-goog.testing.PerformanceTimer.Task.prototype.getSetUp = function() {
-  return this.setUp_;
-};
-
-
-/**
- * Specifies a tear down function to be invoked after each invocation of the
- * test function.
- * @param {function()} tearDown The tear down function.
- * @return {goog.testing.PerformanceTimer.Task} This task.
- */
-goog.testing.PerformanceTimer.Task.prototype.withTearDown = function(tearDown) {
-  this.tearDown_ = tearDown;
-  return this;
-};
-
-
-/**
- * @return {function()} The tear down function or null if none was specified.
- */
-goog.testing.PerformanceTimer.Task.prototype.getTearDown = function() {
-  return this.tearDown_;
-};