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diff --git a/contexts/data/lib/closure-library/closure/goog/locale/timezonedetection.js b/contexts/data/lib/closure-library/closure/goog/locale/timezonedetection.js
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--- a/contexts/data/lib/closure-library/closure/goog/locale/timezonedetection.js
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@@ -1,117 +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 Functions for detecting user's time zone.
- * This work is based on Charlie Luo and Hong Yan's time zone detection work
- * for CBG.
- */
-goog.provide('goog.locale.timeZoneDetection');
-
-goog.require('goog.locale');
-goog.require('goog.locale.TimeZoneFingerprint');
-
-
-/**
- * Array of time instances for checking the time zone offset.
- * @type {Array.<number>}
- * @private
- */
-goog.locale.timeZoneDetection.TZ_POKE_POINTS_ = [
- 1109635200, 1128902400, 1130657000, 1143333000, 1143806400, 1145000000,
- 1146380000, 1152489600, 1159800000, 1159500000, 1162095000, 1162075000,
- 1162105500];
-
-
-/**
- * Calculates time zone fingerprint by poking time zone offsets for 13
- * preselected time points.
- * See {@link goog.locale.timeZoneDetection.TZ_POKE_POINTS_}
- * @param {Date} date Date for calculating the fingerprint.
- * @return {number} Fingerprint of user's time zone setting.
- */
-goog.locale.timeZoneDetection.getFingerprint = function(date) {
- var hash = 0;
- var stdOffset;
- var isComplex = false;
- for (var i = 0;
- i < goog.locale.timeZoneDetection.TZ_POKE_POINTS_.length; i++) {
- date.setTime(goog.locale.timeZoneDetection.TZ_POKE_POINTS_[i] * 1000);
- var offset = date.getTimezoneOffset() / 30 + 48;
- if (i == 0) {
- stdOffset = offset;
- } else if (stdOffset != offset) {
- isComplex = true;
- }
- hash = (hash << 2) ^ offset;
- }
- return isComplex ? hash : /** @type {number} */ (stdOffset);
-};
-
-
-/**
- * Detects browser's time zone setting. If user's country is known, a better
- * time zone choice could be guessed.
- * @param {string=} opt_country Two-letter ISO 3166 country code.
- * @param {Date=} opt_date Date for calculating the fingerprint. Defaults to the
- * current date.
- * @return {string} Time zone ID of best guess.
- */
-goog.locale.timeZoneDetection.detectTimeZone = function(opt_country, opt_date) {
- var date = opt_date || new Date();
- var fingerprint = goog.locale.timeZoneDetection.getFingerprint(date);
- var timeZoneList = goog.locale.TimeZoneFingerprint[fingerprint];
- // Timezones in goog.locale.TimeZoneDetection.TimeZoneMap are in the format
- // US-America/Los_Angeles. Country code needs to be stripped before a
- // timezone is returned.
- if (timeZoneList) {
- if (opt_country) {
- for (var i = 0; i < timeZoneList.length; ++i) {
- if (timeZoneList[i].indexOf(opt_country) == 0) {
- return timeZoneList[i].substring(3);
- }
- }
- }
- return timeZoneList[0].substring(3);
- }
- return '';
-};
-
-
-/**
- * Returns an array of time zones that are consistent with user's platform
- * setting. If user's country is given, only the time zone for that country is
- * returned.
- * @param {string=} opt_country 2 letter ISO 3166 country code. Helps in making
- * a better guess for user's time zone.
- * @param {Date=} opt_date Date for retrieving timezone list. Defaults to the
- * current date.
- * @return {Array.<string>} Array of time zone IDs.
- */
-goog.locale.timeZoneDetection.getTimeZoneList = function(opt_country,
- opt_date) {
- var date = opt_date || new Date();
- var fingerprint = goog.locale.timeZoneDetection.getFingerprint(date);
- var timeZoneList = goog.locale.TimeZoneFingerprint[fingerprint];
- if (!timeZoneList) {
- return [];
- }
- var chosenList = [];
- for (var i = 0; i < timeZoneList.length; i++) {
- if (!opt_country || timeZoneList[i].indexOf(opt_country) == 0) {
- chosenList.push(timeZoneList[i].substring(3));
- }
- }
- return chosenList;
-};