[catapult] - Copy Telemetry's gsutilz over to third_party.

third_party/gsutil/third_party/protorpc/experimental/javascript/closure/xmlhttpfactory.js

Index: third_party/gsutil/third_party/protorpc/experimental/javascript/closure/xmlhttpfactory.js
diff --git a/third_party/gsutil/third_party/protorpc/experimental/javascript/closure/xmlhttpfactory.js b/third_party/gsutil/third_party/protorpc/experimental/javascript/closure/xmlhttpfactory.js
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index 0000000000000000000000000000000000000000..ef2c719e30eb26da727b5441a9ab0169d7240d17
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+++ b/third_party/gsutil/third_party/protorpc/experimental/javascript/closure/xmlhttpfactory.js
@@ -0,0 +1,64 @@
+// Copyright 2010 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 Interface for a factory for creating XMLHttpRequest objects
+ * and metadata about them.
+ * @author dbk@google.com (David Barrett-Kahn)
+ */
+
+goog.provide('goog.net.XmlHttpFactory');
+
+
+
+/**
+ * Abstract base class for an XmlHttpRequest factory.
+ * @constructor
+ */
+goog.net.XmlHttpFactory = function() {
+};
+
+
+/**
+ * Cache of options - we only actually call internalGetOptions once.
+ * @type {Object}
+ * @private
+ */
+goog.net.XmlHttpFactory.prototype.cachedOptions_ = null;
+
+
+/**
+ * @return {!(XMLHttpRequest|GearsHttpRequest)} A new XMLHttpRequest instance.
+ */
+goog.net.XmlHttpFactory.prototype.createInstance = goog.abstractMethod;
+
+
+/**
+ * @return {Object} Options describing how xhr objects obtained from this
+ *     factory should be used.
+ */
+goog.net.XmlHttpFactory.prototype.getOptions = function() {
+  return this.cachedOptions_ ||
+      (this.cachedOptions_ = this.internalGetOptions());
+};
+
+
+/**
+ * Override this method in subclasses to preserve the caching offered by
+ * getOptions().
+ * @return {Object} Options describing how xhr objects obtained from this
+ *     factory should be used.
+ * @protected
+ */
+goog.net.XmlHttpFactory.prototype.internalGetOptions = goog.abstractMethod;