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diff --git a/contexts/data/lib/closure-library/closure/goog/storage/mechanism/mechanismfactory.js b/contexts/data/lib/closure-library/closure/goog/storage/mechanism/mechanismfactory.js
deleted file mode 100644
index 5e73915..0000000
--- a/contexts/data/lib/closure-library/closure/goog/storage/mechanism/mechanismfactory.js
+++ /dev/null
@@ -1,113 +0,0 @@
-// Copyright 2011 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 Provides factory methods for selecting the best storage
- * mechanism, depending on availability and needs.
- *
- */
-
-goog.provide('goog.storage.mechanism.mechanismfactory');
-
-goog.require('goog.storage.mechanism.HTML5LocalStorage');
-goog.require('goog.storage.mechanism.HTML5SessionStorage');
-goog.require('goog.storage.mechanism.IEUserData');
-goog.require('goog.storage.mechanism.IterableMechanism');
-goog.require('goog.storage.mechanism.PrefixedMechanism');
-
-
-/**
- * The key to shared userData storage.
- * @type {string}
- */
-goog.storage.mechanism.mechanismfactory.USER_DATA_SHARED_KEY =
-    'UserDataSharedStore';
-
-
-/**
- * Returns the best local storage mechanism, or null if unavailable.
- * Local storage means that the database is placed on user's computer.
- * The key-value database is normally shared between all the code paths
- * that request it, so using an optional namespace is recommended. This
- * provides separation and makes key collisions unlikely.
- *
- * @param {string=} opt_namespace Restricts the visibility to given namespace.
- * @return {goog.storage.mechanism.IterableMechanism} Created mechanism or null.
- */
-goog.storage.mechanism.mechanismfactory.create = function(opt_namespace) {
-  var factory = goog.storage.mechanism.mechanismfactory;
-  return factory.createHTML5LocalStorage(opt_namespace) ||
-      factory.createIEUserData(opt_namespace);
-};
-
-
-/**
- * Returns an HTML5 local storage mechanism, or null if unavailable.
- * Since the HTML5 local storage does not support namespaces natively,
- * and the key-value database is shared between all the code paths
- * that request it, it is recommended that an optional namespace is
- * used to provide key separation employing a prefix.
- *
- * @param {string=} opt_namespace Restricts the visibility to given namespace.
- * @return {goog.storage.mechanism.IterableMechanism} Created mechanism or null.
- */
-goog.storage.mechanism.mechanismfactory.createHTML5LocalStorage = function(
-    opt_namespace) {
-  var storage = new goog.storage.mechanism.HTML5LocalStorage();
-  if (storage.isAvailable()) {
-    return opt_namespace ? new goog.storage.mechanism.PrefixedMechanism(
-        storage, opt_namespace) : storage;
-  }
-  return null;
-};
-
-
-/**
- * Returns an HTML5 session storage mechanism, or null if unavailable.
- * Since the HTML5 session storage does not support namespaces natively,
- * and the key-value database is shared between all the code paths
- * that request it, it is recommended that an optional namespace is
- * used to provide key separation employing a prefix.
- *
- * @param {string=} opt_namespace Restricts the visibility to given namespace.
- * @return {goog.storage.mechanism.IterableMechanism} Created mechanism or null.
- */
-goog.storage.mechanism.mechanismfactory.createHTML5SessionStorage = function(
-    opt_namespace) {
-  var storage = new goog.storage.mechanism.HTML5SessionStorage();
-  if (storage.isAvailable()) {
-    return opt_namespace ? new goog.storage.mechanism.PrefixedMechanism(
-        storage, opt_namespace) : storage;
-  }
-  return null;
-};
-
-
-/**
- * Returns an IE userData local storage mechanism, or null if unavailable.
- * Using an optional namespace is recommended to provide separation and
- * avoid key collisions.
- *
- * @param {string=} opt_namespace Restricts the visibility to given namespace.
- * @return {goog.storage.mechanism.IterableMechanism} Created mechanism or null.
- */
-goog.storage.mechanism.mechanismfactory.createIEUserData = function(
-    opt_namespace) {
-  var storage = new goog.storage.mechanism.IEUserData(opt_namespace ||
-      goog.storage.mechanism.mechanismfactory.USER_DATA_SHARED_KEY);
-  if (storage.isAvailable()) {
-    return storage;
-  }
-  return null;
-};