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diff --git a/tools/addon-sdk-1.4/packages/api-utils/lib/xhr.js b/tools/addon-sdk-1.4/packages/api-utils/lib/xhr.js
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index 10b83db..0000000
--- a/tools/addon-sdk-1.4/packages/api-utils/lib/xhr.js
+++ /dev/null
@@ -1,181 +0,0 @@
-/* ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (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.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is Jetpack.
- *
- * The Initial Developer of the Original Code is Mozilla.
- * Portions created by the Initial Developer are Copyright (C) 2007
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *   Atul Varma <atul@mozilla.com>
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either the GNU General Public License Version 2 or later (the "GPL"), or
- * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
-
-"use strict";
-
-const {Cc,Ci} = require("chrome");
-
-// ## Implementation Notes ##
-// 
-// Making `XMLHttpRequest` objects available to Jetpack code involves a
-// few key principles universal to all low-level module implementations:
-//
-// * **Unloadability**. A Jetpack-based extension using this module can be 
-//   asked to unload itself at any time, e.g. because the user decides to
-//   uninstall or disable the extension. This means we need to keep track of
-//   all in-progress reqests and abort them on unload.
-//
-// * **Developer-Ergonomic Tracebacks**. Whenever an exception is raised
-//   by a Jetpack-based extension, we want it to be logged in a
-//   place that is specific to that extension--so that a developer
-//   can distinguish it from an error on a web page or in another
-//   extension, for instance. We also want it to be logged with a
-//   full stack traceback, which the Mozilla platform doesn't usually
-//   do.
-//
-//   Because of this, we don't actually want to give the Mozilla
-//   platform's "real" XHR implementation to clients, but instead provide
-//   a simple wrapper that trivially delegates to the implementation in
-//   all cases except where callbacks are involved: whenever Mozilla
-//   platform code calls into the extension, such as during the XHR's
-//   `onreadystatechange` callback, we want to wrap the client's callback
-//   in a try-catch clause that traps any exceptions raised by the
-//   callback and logs them via console.exception() instead of allowing
-//   them to propagate back into Mozilla platform code.
-
-// This is a private list of all active requests, so we know what to
-// abort if we're asked to unload.
-var requests = [];
-
-// Events on XHRs that we should listen for, so we know when to remove
-// a request from our private list.
-const TERMINATE_EVENTS = ["load", "error", "abort"];
-
-// Read-only properties of XMLHttpRequest objects that we want to
-// directly delegate to.
-const READ_ONLY_PROPS = ["readyState", "responseText", "responseXML",
-                         "status", "statusText"];
-
-// Methods of XMLHttpRequest that we want to directly delegate to.
-const DELEGATED_METHODS = ["abort", "getAllResponseHeaders",
-                           "getResponseHeader", "overrideMimeType",
-                           "send", "sendAsBinary", "setRequestHeader",
-                           "open"];
-
-var getRequestCount = exports.getRequestCount = function getRequestCount() {
-  return requests.length;
-};
-
-var XMLHttpRequest = exports.XMLHttpRequest = function XMLHttpRequest() {
-  var req = Cc["@mozilla.org/xmlextras/xmlhttprequest;1"]
-            .createInstance(Ci.nsIXMLHttpRequest);
-  // For the sake of simplicity, don't tie this request to any UI.
-  req.mozBackgroundRequest = true;
-
-  memory.track(req, "XMLHttpRequest");
-
-  this._req = req;
-  this._orsc = null;
-
-  requests.push(this);
-
-  var self = this;
-
-  this._boundCleanup = function _boundCleanup() {
-    self._cleanup();
-  };
-
-  TERMINATE_EVENTS.forEach(
-    function(name) {
-      self._req.addEventListener(name, self._boundCleanup, false);
-    });
-};
-
-XMLHttpRequest.prototype = {
-  _cleanup: function _cleanup() {
-    this.onreadystatechange = null;
-    var index = requests.indexOf(this);
-    if (index != -1) {
-      var self = this;
-      TERMINATE_EVENTS.forEach(
-        function(name) {
-          self._req.removeEventListener(name, self._boundCleanup, false);
-        });
-      requests.splice(index, 1);
-    }
-  },
-  _unload: function _unload() {
-    this._req.abort();
-    this._cleanup();
-  },
-  addEventListener: function addEventListener() {
-    throw new Error("not implemented");
-  },
-  removeEventListener: function removeEventListener() {
-    throw new Error("not implemented");
-  },
-  set upload(newValue) {
-    throw new Error("not implemented");
-  },
-  get onreadystatechange() {
-    return this._orsc;
-  },
-  set onreadystatechange(cb) {
-    this._orsc = cb;
-    if (cb) {
-      var self = this;
-      this._req.onreadystatechange = function() {
-        try {
-          self._orsc.apply(self, arguments);
-        } catch (e) {
-          console.exception(e);
-        }
-      };
-    } else
-      this._req.onreadystatechange = null;
-  }
-};
-
-READ_ONLY_PROPS.forEach(
-   function(name) {
-     XMLHttpRequest.prototype.__defineGetter__(
-       name,
-       function() {
-         return this._req[name];
-       });
-   });
-
-DELEGATED_METHODS.forEach(
-  function(name) {
-    XMLHttpRequest.prototype[name] = function() {
-      return this._req[name].apply(this._req, arguments);
-    };
-  });
-
-require("./unload").when(
-  function() {
-    requests.slice().forEach(function(request) { request._unload(); });
-  });