diff --git a/testing/mochitest/tests/SimpleTest/TestRunner.js b/testing/mochitest/tests/SimpleTest/TestRunner.js
index 34429d7d2456..c4486036d0f5 100644
--- a/testing/mochitest/tests/SimpleTest/TestRunner.js
+++ b/testing/mochitest/tests/SimpleTest/TestRunner.js
@@ -1,3 +1,4 @@
+/* -*- js-indent-level: 4 -*- */
 /*
  * e10s event dispatcher from content->chrome
  *
@@ -84,6 +85,9 @@ TestRunner._expectedMaxAsserts = 0;
 TestRunner.timeout = 5 * 60 * 1000; // 5 minutes.
 TestRunner.maxTimeouts = 4; // halt testing after too many timeouts
 TestRunner.runSlower = false;
+TestRunner.dumpOutputDirectory = "";
+TestRunner.dumpAboutMemoryAfterTest = false;
+TestRunner.dumpDMDAfterTest = false;
 TestRunner.slowestTestTime = 0;
 TestRunner.slowestTestURL = "";
 
diff --git a/testing/mochitest/tests/SimpleTest/setup.js b/testing/mochitest/tests/SimpleTest/setup.js
index ac1966383ff1..ebd2a9f97ba5 100644
--- a/testing/mochitest/tests/SimpleTest/setup.js
+++ b/testing/mochitest/tests/SimpleTest/setup.js
@@ -131,6 +131,18 @@ if (params.runSlower) {
   TestRunner.runSlower = true;
 }
 
+if (params.dumpOutputDirectory) {
+  TestRunner.dumpOutputDirectory = params.dumpOutputDirectory;
+}
+
+if (params.dumpAboutMemoryAfterTest) {
+  TestRunner.dumpAboutMemoryAfterTest = true;
+}
+
+if (params.dumpDMDAfterTest) {
+  TestRunner.dumpDMDAfterTest = true;
+}
+
 var gTestList = [];
 var RunSet = {}
 RunSet.runall = function(e) {