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diff --git a/contexts/data/lib/closure-library/closure/goog/testing/mockrandom.js b/contexts/data/lib/closure-library/closure/goog/testing/mockrandom.js
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@@ -1,126 +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 MockRandom provides a mechanism for specifying a stream of
- * numbers to expect from calls to Math.random().
- *
- */
-
-goog.provide('goog.testing.MockRandom');
-
-goog.require('goog.Disposable');
-
-
-
-/**
- * Class for unit testing code that uses Math.random.
- *
- * @param {Array.<number>} sequence The sequence of numbers to return.
- * @param {boolean=} opt_install Whether to install the MockRandom at
- * construction time.
- * @extends {goog.Disposable}
- * @constructor
- */
-goog.testing.MockRandom = function(sequence, opt_install) {
- goog.Disposable.call(this);
-
- /**
- * The sequence of numbers to be returned by calls to random()
- * @type {Array.<number>}
- * @private
- */
- this.sequence_ = sequence || [];
-
- /**
- * The original Math.random function.
- * @type {function(): number}
- * @private
- */
- this.mathRandom_ = Math.random;
-
- if (opt_install) {
- this.install();
- }
-};
-goog.inherits(goog.testing.MockRandom, goog.Disposable);
-
-
-/**
- * Whether this MockRandom has been installed.
- * @type {boolean}
- * @private
- */
-goog.testing.MockRandom.prototype.installed_;
-
-
-/**
- * Installs this MockRandom as the system number generator.
- */
-goog.testing.MockRandom.prototype.install = function() {
- if (!this.installed_) {
- Math.random = goog.bind(this.random, this);
- this.installed_ = true;
- }
-};
-
-
-/**
- * @return {number} The next number in the sequence. If there are no more values
- * left, this will return a random number.
- */
-goog.testing.MockRandom.prototype.random = function() {
- return this.hasMoreValues() ? this.sequence_.shift() : this.mathRandom_();
-};
-
-
-/**
- * @return {boolean} Whether there are more numbers left in the sequence.
- */
-goog.testing.MockRandom.prototype.hasMoreValues = function() {
- return this.sequence_.length > 0;
-};
-
-
-/**
- * Injects new numbers into the beginning of the sequence.
- * @param {Array.<number>|number} values Number or array of numbers to inject.
- */
-goog.testing.MockRandom.prototype.inject = function(values) {
- if (goog.isArray(values)) {
- this.sequence_ = values.concat(this.sequence_);
- } else {
- this.sequence_.splice(0, 0, values);
- }
-};
-
-
-/**
- * Uninstalls the MockRandom.
- */
-goog.testing.MockRandom.prototype.uninstall = function() {
- if (this.installed_) {
- Math.random = this.mathRandom_;
- this.installed_ = false;
- }
-};
-
-
-/** @override */
-goog.testing.MockRandom.prototype.disposeInternal = function() {
- this.uninstall();
- delete this.sequence_;
- delete this.mathRandom_;
- goog.testing.MockRandom.superClass_.disposeInternal.call(this);
-};