diff --git a/dom/network/tests/unit_ipc/test_udpsocket_ipc.js b/dom/network/tests/unit_ipc/test_udpsocket_ipc.js
deleted file mode 100644
index 5992f461576..00000000000
--- a/dom/network/tests/unit_ipc/test_udpsocket_ipc.js
+++ /dev/null
@@ -1,9 +0,0 @@
-Components.utils.import("resource://gre/modules/Services.jsm");
-
-function run_test() {
-  Services.prefs.setBoolPref('media.peerconnection.ipc.enabled', true);
-  run_test_in_child("/udpsocket_child.js", function() {
-    Services.prefs.clearUserPref('media.peerconnection.ipc.enabled');
-    do_test_finished();
-  });
-}
diff --git a/dom/network/tests/unit_ipc/udpsocket_child.js b/dom/network/tests/unit_ipc/udpsocket_child.js
deleted file mode 100644
index 5cb43e75e6b..00000000000
--- a/dom/network/tests/unit_ipc/udpsocket_child.js
+++ /dev/null
@@ -1,164 +0,0 @@
-/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this file,
- * You can obtain one at http://mozilla.org/MPL/2.0/. */
-'use strict';
-
-const {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
-
-Cu.import('resource://gre/modules/XPCOMUtils.jsm');
-Cu.import('resource://gre/modules/Services.jsm');
-
-const SERVER_PORT = 12345;
-const DATA_ARRAY = [0, 255, 254, 0, 1, 2, 3, 0, 255, 255, 254, 0];
-
-function UDPSocketInternalImpl() {
-}
-
-UDPSocketInternalImpl.prototype = {
-  QueryInterface: XPCOMUtils.generateQI([Ci.nsIUDPSocketInternal]),
-  callListenerError: function(type, message, filename, lineNumber, columnNumber) {
-    if (this.onerror) {
-      this.onerror();
-    } else {
-      do_throw('Received unexpected error: ' + message + ' at ' + filename +
-                ':' + lineNumber + ':' + columnNumber);
-    }
-  },
-  callListenerReceivedData: function(type, host, port, data, dataLength) {
-    do_print('*** recv data(' + dataLength + ')=' + data.join() + '\n');
-    if (this.ondata) {
-      try {
-        this.ondata(data, dataLength);
-      } catch(ex) {
-        if (ex === Cr.NS_ERROR_ABORT)
-          throw ex;
-        do_print('Caught exception: ' + ex + '\n' + ex.stack);
-        do_throw('test is broken; bad ondata handler; see above');
-      }
-    } else {
-      do_throw('Received ' + dataLength + ' bytes of unexpected data!');
-    }
-  },
-  callListenerVoid: function(type) {
-    switch (type) {
-    case 'onopen':
-      if (this.onopen) {
-        this.onopen();
-      }
-      break;
-    case 'onclose':
-      if (this.onclose) {
-        this.onclose();
-      }
-      break;
-    }
-  },
-  callListenerSent: function(type, value) {
-    if (value != Cr.NS_OK) {
-      do_throw('Previous send was failed with cause: ' + value);
-    }
-  },
-  updateReadyState: function(readyState) {
-    do_print('*** current state: ' + readyState + '\n');
-  },
-  onopen: function() {},
-  onclose: function() {},
-};
-
-function makeSuccessCase(name) {
-  return function() {
-    do_print('got expected: ' + name);
-    run_next_test();
-  };
-}
-
-function makeJointSuccess(names) {
-  let funcs = {}, successCount = 0;
-  names.forEach(function(name) {
-    funcs[name] = function() {
-      do_print('got excepted: ' + name);
-      if (++successCount === names.length)
-        run_next_test();
-    };
-  });
-  return funcs;
-}
-
-function makeExpectedData(expectedData, callback) {
-  return function(receivedData, receivedDataLength) {
-    if (receivedDataLength != expectedData.length) {
-      do_throw('Received data size mismatched, expected ' + expectedData.length +
-               ' but got ' + receivedDataLength);
-    }
-    for (let i = 0; i < receivedDataLength; i++) {
-      if (receivedData[i] != expectedData[i]) {
-        do_throw('Received mismatched data at position ' + i);
-      }
-    }
-    if (callback) {
-      callback();
-    } else {
-      run_next_test();
-    }
-  };
-}
-
-function makeFailureCase(name) {
-  return function() {
-    let argstr;
-    if (arguments.length) {
-      argstr = '(args: ' +
-        Array.map(arguments, function(x) {return x.data + ""; }).join(" ") + ')';
-    } else {
-      argstr = '(no arguments)';
-    }
-    do_throw('got unexpected: ' + name + ' ' + argstr);
-  };
-}
-
-function createSocketChild() {
-  return Cc['@mozilla.org/udp-socket-child;1']
-           .createInstance(Ci.nsIUDPSocketChild);
-}
-
-var UDPSocket = createSocketChild();
-var callback = new UDPSocketInternalImpl();
-
-function connectSock() {
-  UDPSocket.bind(callback, '127.0.0.1', SERVER_PORT);
-  callback.onopen = makeSuccessCase('open');
-}
-
-function sendData() {
-  UDPSocket.send('127.0.0.1', SERVER_PORT, DATA_ARRAY, DATA_ARRAY.length);
-  callback.ondata = makeExpectedData(DATA_ARRAY);
-}
-
-function clientClose() {
-  UDPSocket.close();
-  callback.ondata = makeFailureCase('data');
-  callback.onclose = makeSuccessCase('close');
-}
-
-function connectError() {
-  UDPSocket = createSocketChild();
-  UDPSocket.bind(callback, 'some non-IP string', SERVER_PORT);
-  callback.onerror = makeSuccessCase('error');
-  callback.onopen = makeFailureCase('open');
-}
-
-function cleanup() {
-  UDPSocket = null;
-  run_next_test();
-}
-
-add_test(connectSock);
-add_test(sendData);
-add_test(clientClose);
-add_test(connectError);
-add_test(cleanup);
-
-function run_test() {
-  run_next_test();
-}
diff --git a/dom/network/tests/unit_ipc/xpcshell.ini b/dom/network/tests/unit_ipc/xpcshell.ini
index cd207bcc5ee..1aeed237033 100644
--- a/dom/network/tests/unit_ipc/xpcshell.ini
+++ b/dom/network/tests/unit_ipc/xpcshell.ini
@@ -1,10 +1,7 @@
 [DEFAULT]
 head =
 tail =
-support-files =
-  udpsocket_child.js
 
 [test_tcpsocket_ipc.js]
 [test_tcpserversocket_ipc.js]
-[test_udpsocket_ipc.js]
 run-sequentially = Uses hardcoded port, bug 903830.