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diff --git a/contexts/data/lib/closure-library/closure/goog/storage/collectablestorage.js b/contexts/data/lib/closure-library/closure/goog/storage/collectablestorage.js
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--- a/contexts/data/lib/closure-library/closure/goog/storage/collectablestorage.js
+++ /dev/null
@@ -1,100 +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 a convenient API for data persistence with data
- * expiration and user-initiated expired key collection.
- *
- */
-
-goog.provide('goog.storage.CollectableStorage');
-
-goog.require('goog.array');
-goog.require('goog.asserts');
-goog.require('goog.iter');
-goog.require('goog.storage.ErrorCode');
-goog.require('goog.storage.ExpiringStorage');
-goog.require('goog.storage.RichStorage.Wrapper');
-goog.require('goog.storage.mechanism.IterableMechanism');
-
-
-
-/**
- * Provides a storage with expirning keys and a collection method.
- *
- * @param {!goog.storage.mechanism.IterableMechanism} mechanism The underlying
- * storage mechanism.
- * @constructor
- * @extends {goog.storage.ExpiringStorage}
- */
-goog.storage.CollectableStorage = function(mechanism) {
- goog.base(this, mechanism);
-};
-goog.inherits(goog.storage.CollectableStorage, goog.storage.ExpiringStorage);
-
-
-/**
- * Cleans up the storage by removing expired keys.
- *
- * @param {boolean=} opt_strict Also remove invalid keys.
- */
-goog.storage.CollectableStorage.prototype.collect = function(opt_strict) {
- var selfObj = this;
- var keysToRemove = [];
- goog.iter.forEach(this.mechanism.__iterator__(true), function(key) {
- // Get the wrapper.
- var wrapper;
- /** @preserveTry */
- try {
- wrapper = goog.storage.CollectableStorage.prototype.getWrapper.call(
- selfObj, key, true);
- } catch (ex) {
- if (ex == goog.storage.ErrorCode.INVALID_VALUE) {
- // Bad wrappers are removed in strict mode.
- if (opt_strict) {
- keysToRemove.push(key);
- }
- // Skip over bad wrappers and continue.
- return;
- }
- // Unknown error, escalate.
- throw ex;
- }
- goog.asserts.assert(wrapper);
- // Remove expired objects.
- if (goog.storage.ExpiringStorage.isExpired(wrapper)) {
- keysToRemove.push(key);
- // Continue with the next key.
- return;
- }
- // Objects which can't be decoded are removed in strict mode.
- if (opt_strict) {
- /** @preserveTry */
- try {
- goog.storage.RichStorage.Wrapper.unwrap(wrapper);
- } catch (ex) {
- if (ex == goog.storage.ErrorCode.INVALID_VALUE) {
- keysToRemove.push(key);
- // Skip over bad wrappers and continue.
- return;
- }
- // Unknown error, escalate.
- throw ex;
- }
- }
- });
- goog.array.forEach(keysToRemove, function(key) {
- goog.storage.CollectableStorage.prototype.remove.call(selfObj, key);
- });
-};