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diff --git a/contexts/data/lib/closure-library/closure/goog/i18n/timezone.js b/contexts/data/lib/closure-library/closure/goog/i18n/timezone.js
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--- a/contexts/data/lib/closure-library/closure/goog/i18n/timezone.js
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@@ -1,341 +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 to provide timezone information for use with
- * date/time format.
- */
-
-goog.provide('goog.i18n.TimeZone');
-
-goog.require('goog.array');
-goog.require('goog.date.DateLike');
-goog.require('goog.string');
-
-
-
-/**
- * TimeZone class implemented a time zone resolution and name information
- * source for client applications. The time zone object is initiated from
- * a time zone information object. Application can initiate a time zone
- * statically, or it may choose to initiate from a data obtained from server.
- * Each time zone information array is small, but the whole set of data
- * is too much for client application to download. If end user is allowed to
- * change time zone setting, dynamic retrieval should be the method to use.
- * In case only time zone offset is known, there is a decent fallback
- * that only use the time zone offset to create a TimeZone object.
- * A whole set of time zone information array was available under
- * http://go/js_locale_data. It is generated based on CLDR and
- * Olson time zone data base (through pytz), and will be updated timely.
- *
- * @constructor
- */
-goog.i18n.TimeZone = function() {
-  /**
-   * The standard time zone id.
-   * @type {string}
-   * @private
-   */
-  this.timeZoneId_;
-
-
-  /**
-   * The standard, non-daylight time zone offset, in minutes WEST of UTC.
-   * @type {number}
-   * @private
-   */
-  this.standardOffset_;
-
-
-  /**
-   * An array of strings that can have 2 or 4 elements.  The first two elements
-   * are the long and short names for standard time in this time zone, and the
-   * last two elements (if present) are the long and short names for daylight
-   * time in this time zone.
-   * @type {Array.<string>}
-   * @private
-   */
-  this.tzNames_;
-
-
-  /**
-   * This array specifies the Daylight Saving Time transitions for this time
-   * zone.  This is a flat array of numbers which are interpreted in pairs:
-   * [time1, adjustment1, time2, adjustment2, ...] where each time is a DST
-   * transition point given as a number of hours since 00:00 UTC, January 1,
-   * 1970, and each adjustment is the adjustment to apply for times after the
-   * DST transition, given as minutes EAST of UTC.
-   * @type {Array.<number>}
-   * @private
-   */
-  this.transitions_;
-};
-
-
-/**
- * The number of milliseconds in an hour.
- * @type {number}
- * @private
- */
-goog.i18n.TimeZone.MILLISECONDS_PER_HOUR_ = 3600 * 1000;
-
-
-/**
- * Indices into the array of time zone names.
- * @enum {number}
- */
-goog.i18n.TimeZone.NameType = {
-  STD_SHORT_NAME: 0,
-  STD_LONG_NAME: 1,
-  DLT_SHORT_NAME: 2,
-  DLT_LONG_NAME: 3
-};
-
-
-/**
- * This factory method creates a time zone instance.  It takes either an object
- * containing complete time zone information, or a single number representing a
- * constant time zone offset.  If the latter form is used, DST functionality is
- * not available.
- *
- * @param {number|Object} timeZoneData If this parameter is a number, it should
- *     indicate minutes WEST of UTC to be used as a constant time zone offset.
- *     Otherwise, it should be an object with these four fields:
- *     <ul>
- *     <li>id: A string ID for the time zone.
- *     <li>std_offset: The standard time zone offset in minutes EAST of UTC.
- *     <li>names: An array of four names (standard short name, standard long
- *           name, daylight short name, daylight long, name)
- *     <li>transitions: An array of numbers which are interpreted in pairs:
- *           [time1, adjustment1, time2, adjustment2, ...] where each time is
- *           a DST transition point given as a number of hours since 00:00 UTC,
- *           January 1, 1970, and each adjustment is the adjustment to apply
- *           for times after the DST transition, given as minutes EAST of UTC.
- *     </ul>
- * @return {goog.i18n.TimeZone} A goog.i18n.TimeZone object for the given
- *     time zone data.
- */
-goog.i18n.TimeZone.createTimeZone = function(timeZoneData) {
-  if (typeof timeZoneData == 'number') {
-    return goog.i18n.TimeZone.createSimpleTimeZone_(timeZoneData);
-  }
-  var tz = new goog.i18n.TimeZone();
-  tz.timeZoneId_ = timeZoneData['id'];
-  tz.standardOffset_ = -timeZoneData['std_offset'];
-  tz.tzNames_ = timeZoneData['names'];
-  tz.transitions_ = timeZoneData['transitions'];
-  return tz;
-};
-
-
-/**
- * This factory method creates a time zone object with a constant offset.
- * @param {number} timeZoneOffsetInMinutes Offset in minutes WEST of UTC.
- * @return {goog.i18n.TimeZone} A time zone object with the given constant
- *     offset.  Note that the time zone ID of this object will use the POSIX
- *     convention, which has a reversed sign ("Etc/GMT+8" means UTC-8 or PST).
- * @private
- */
-goog.i18n.TimeZone.createSimpleTimeZone_ = function(timeZoneOffsetInMinutes) {
-  var tz = new goog.i18n.TimeZone();
-  tz.standardOffset_ = timeZoneOffsetInMinutes;
-  tz.timeZoneId_ =
-      goog.i18n.TimeZone.composePosixTimeZoneID_(timeZoneOffsetInMinutes);
-  var str = goog.i18n.TimeZone.composeUTCString_(timeZoneOffsetInMinutes);
-  tz.tzNames_ = [str, str];
-  tz.transitions_ = [];
-  return tz;
-};
-
-
-/**
- * Generate a GMT-relative string for a constant time zone offset.
- * @param {number} offset The time zone offset in minutes WEST of UTC.
- * @return {string} The GMT string for this offset, which will indicate
- *     hours EAST of UTC.
- * @private
- */
-goog.i18n.TimeZone.composeGMTString_ = function(offset) {
-  var parts = ['GMT'];
-  parts.push(offset <= 0 ? '+' : '-');
-  offset = Math.abs(offset);
-  parts.push(goog.string.padNumber(Math.floor(offset / 60) % 100, 2),
-             ':', goog.string.padNumber(offset % 60, 2));
-  return parts.join('');
-};
-
-
-/**
- * Generate a POSIX time zone ID for a constant time zone offset.
- * @param {number} offset The time zone offset in minutes WEST of UTC.
- * @return {string} The POSIX time zone ID for this offset, which will indicate
- *     hours WEST of UTC.
- * @private
- */
-goog.i18n.TimeZone.composePosixTimeZoneID_ = function(offset) {
-  if (offset == 0) {
-    return 'Etc/GMT';
-  }
-  var parts = ['Etc/GMT', offset < 0 ? '-' : '+'];
-  offset = Math.abs(offset);
-  parts.push(Math.floor(offset / 60) % 100);
-  offset = offset % 60;
-  if (offset != 0) {
-    parts.push(':', goog.string.padNumber(offset, 2));
-  }
-  return parts.join('');
-};
-
-
-/**
- * Generate a UTC-relative string for a constant time zone offset.
- * @param {number} offset The time zone offset in minutes WEST of UTC.
- * @return {string} The UTC string for this offset, which will indicate
- *     hours EAST of UTC.
- * @private
- */
-goog.i18n.TimeZone.composeUTCString_ = function(offset) {
-  if (offset == 0) {
-    return 'UTC';
-  }
-  var parts = ['UTC', offset < 0 ? '+' : '-'];
-  offset = Math.abs(offset);
-  parts.push(Math.floor(offset / 60) % 100);
-  offset = offset % 60;
-  if (offset != 0) {
-    parts.push(':', offset);
-  }
-  return parts.join('');
-};
-
-
-/**
- * Convert the contents of time zone object to a timeZoneData object, suitable
- * for passing to goog.i18n.TimeZone.createTimeZone.
- * @return {Object} A timeZoneData object (see the documentation for
- *     goog.i18n.TimeZone.createTimeZone).
- */
-goog.i18n.TimeZone.prototype.getTimeZoneData = function() {
-  return {
-    'id': this.timeZoneId_,
-    'std_offset': -this.standardOffset_,  // note createTimeZone flips the sign
-    'names': goog.array.clone(this.tzNames_),  // avoid aliasing the array
-    'transitions': goog.array.clone(this.transitions_)  // avoid aliasing
-  };
-};
-
-
-/**
- * Return the DST adjustment to the time zone offset for a given time.
- * While Daylight Saving Time is in effect, this number is positive.
- * Otherwise, it is zero.
- * @param {goog.date.DateLike} date The time to check.
- * @return {number} The DST adjustment in minutes EAST of UTC.
- */
-goog.i18n.TimeZone.prototype.getDaylightAdjustment = function(date) {
-  var timeInMs = Date.UTC(date.getUTCFullYear(), date.getUTCMonth(),
-                          date.getUTCDate(), date.getUTCHours(),
-                          date.getUTCMinutes());
-  var timeInHours = timeInMs / goog.i18n.TimeZone.MILLISECONDS_PER_HOUR_;
-  var index = 0;
-  while (index < this.transitions_.length &&
-         timeInHours >= this.transitions_[index]) {
-    index += 2;
-  }
-  return (index == 0) ? 0 : this.transitions_[index - 1];
-};
-
-
-/**
- * Return the GMT representation of this time zone object.
- * @param {goog.date.DateLike} date The date for which time to retrieve
- *     GMT string.
- * @return {string} GMT representation string.
- */
-goog.i18n.TimeZone.prototype.getGMTString = function(date) {
-  return goog.i18n.TimeZone.composeGMTString_(this.getOffset(date));
-};
-
-
-/**
- * Get the long time zone name for a given date/time.
- * @param {goog.date.DateLike} date The time for which to retrieve
- *     the long time zone name.
- * @return {string} The long time zone name.
- */
-goog.i18n.TimeZone.prototype.getLongName = function(date) {
-  return this.tzNames_[this.isDaylightTime(date) ?
-      goog.i18n.TimeZone.NameType.DLT_LONG_NAME :
-      goog.i18n.TimeZone.NameType.STD_LONG_NAME];
-};
-
-
-/**
- * Get the time zone offset in minutes WEST of UTC for a given date/time.
- * @param {goog.date.DateLike} date The time for which to retrieve
- *     the time zone offset.
- * @return {number} The time zone offset in minutes WEST of UTC.
- */
-goog.i18n.TimeZone.prototype.getOffset = function(date) {
-  return this.standardOffset_ - this.getDaylightAdjustment(date);
-};
-
-
-/**
- * Get the RFC representation of the time zone for a given date/time.
- * @param {goog.date.DateLike} date The time for which to retrieve the
- *     RFC time zone string.
- * @return {string} The RFC time zone string.
- */
-goog.i18n.TimeZone.prototype.getRFCTimeZoneString = function(date) {
-  var offset = -this.getOffset(date);
-  var parts = [offset < 0 ? '-' : '+'];
-  offset = Math.abs(offset);
-  parts.push(goog.string.padNumber(Math.floor(offset / 60) % 100, 2),
-             goog.string.padNumber(offset % 60, 2));
-  return parts.join('');
-};
-
-
-/**
- * Get the short time zone name for given date/time.
- * @param {goog.date.DateLike} date The time for which to retrieve
- *     the short time zone name.
- * @return {string} The short time zone name.
- */
-goog.i18n.TimeZone.prototype.getShortName = function(date) {
-  return this.tzNames_[this.isDaylightTime(date) ?
-      goog.i18n.TimeZone.NameType.DLT_SHORT_NAME :
-      goog.i18n.TimeZone.NameType.STD_SHORT_NAME];
-};
-
-
-/**
- * Return the time zone ID for this time zone.
- * @return {string} The time zone ID.
- */
-goog.i18n.TimeZone.prototype.getTimeZoneId = function() {
-  return this.timeZoneId_;
-};
-
-
-/**
- * Check if Daylight Saving Time is in effect at a given time in this time zone.
- * @param {goog.date.DateLike} date The time to check.
- * @return {boolean} True if Daylight Saving Time is in effect.
- */
-goog.i18n.TimeZone.prototype.isDaylightTime = function(date) {
-  return this.getDaylightAdjustment(date) > 0;
-};
-