diff --git a/mobile/chrome/tests/browser_bookmarks.js b/mobile/chrome/tests/browser_bookmarks.js
index 37d9e01a0036..209898657692 100644
--- a/mobile/chrome/tests/browser_bookmarks.js
+++ b/mobile/chrome/tests/browser_bookmarks.js
@@ -4,8 +4,8 @@
  *              component, specifically for bookmark management.
  */
 
-var testURL_01 = "chrome://mochikit/content/browser/mobile/chrome/browser_blank_01.html";
-var testURL_02 = "chrome://mochikit/content/browser/mobile/chrome/browser_blank_02.html";
+var testURL_01 = chromeRoot + "browser_blank_01.html";
+var testURL_02 = chromeRoot + "browser_blank_02.html";
 
 // A queue to order the tests and a handle for each test
 var gTests = [];
diff --git a/mobile/chrome/tests/browser_bookmarks_star.js b/mobile/chrome/tests/browser_bookmarks_star.js
index 643e02bc9ce5..eea4fb0c443c 100644
--- a/mobile/chrome/tests/browser_bookmarks_star.js
+++ b/mobile/chrome/tests/browser_bookmarks_star.js
@@ -4,8 +4,8 @@
  *              component, specifically for bookmark management.
  */
 
-var testURL_01 = "chrome://mochikit/content/browser/mobile/chrome/browser_blank_01.html";
-var testURL_02 = "chrome://mochikit/content/browser/mobile/chrome/browser_blank_02.html";
+var testURL_01 = chromeRoot + "browser_blank_01.html";
+var testURL_02 = chromeRoot + "browser_blank_02.html";
 
 // A queue to order the tests and a handle for each test
 var gTests = [];
diff --git a/mobile/chrome/tests/browser_bookmarks_tags.js b/mobile/chrome/tests/browser_bookmarks_tags.js
index 8bb9a6109e59..4821b6af1e0c 100644
--- a/mobile/chrome/tests/browser_bookmarks_tags.js
+++ b/mobile/chrome/tests/browser_bookmarks_tags.js
@@ -4,8 +4,8 @@
  *              component, specifically for bookmark management.
  */
 
-var testURL_01 = "chrome://mochikit/content/browser/mobile/chrome/browser_blank_01.html";
-var testURL_02 = "chrome://mochikit/content/browser/mobile/chrome/browser_blank_02.html";
+var testURL_01 = chromeRoot + "browser_blank_01.html";
+var testURL_02 = chromeRoot + "browser_blank_02.html";
 
 // A queue to order the tests and a handle for each test
 var gTests = [];
diff --git a/mobile/chrome/tests/browser_click_content.js b/mobile/chrome/tests/browser_click_content.js
index 0fdff7b58471..0fd0ccc6ee72 100644
--- a/mobile/chrome/tests/browser_click_content.js
+++ b/mobile/chrome/tests/browser_click_content.js
@@ -1,4 +1,4 @@
-let testURL_click = "chrome://mochikit/content/browser/mobile/chrome/browser_click_content.html";
+let testURL_click = chromeRoot + "browser_click_content.html";
 
 let currentTab;
 let element;
diff --git a/mobile/chrome/tests/browser_forms.js b/mobile/chrome/tests/browser_forms.js
index 3993d47e8c56..9e9e7bc2d875 100644
--- a/mobile/chrome/tests/browser_forms.js
+++ b/mobile/chrome/tests/browser_forms.js
@@ -1,5 +1,5 @@
-let testURL = "chrome://mochikit/content/browser/mobile/chrome/browser_forms.html";
-messageManager.loadFrameScript("chrome://mochikit/content/browser/mobile/chrome/remote_forms.js", true);
+let testURL = chromeRoot + "browser_forms.html";
+messageManager.loadFrameScript(chromeRoot + "remote_forms.js", true);
 
 let newTab = null;
 let isLoading = function() {
diff --git a/mobile/chrome/tests/browser_navigation.js b/mobile/chrome/tests/browser_navigation.js
index b64dcbdf7704..a831fe2c9cd0 100644
--- a/mobile/chrome/tests/browser_navigation.js
+++ b/mobile/chrome/tests/browser_navigation.js
@@ -1,7 +1,7 @@
-var testURL_01 = "chrome://mochikit/content/browser/mobile/chrome/browser_blank_01.html";
-var testURL_02 = "chrome://mochikit/content/browser/mobile/chrome/browser_blank_02.html";
-var testURL_03 = "chrome://mochikit/content/browser/mobile/chrome/browser_english_title.html";
-var testURL_04 = "chrome://mochikit/content/browser/mobile/chrome/browser_no_title.html";
+var testURL_01 = chromeRoot + "browser_blank_01.html";
+var testURL_02 = chromeRoot + "browser_blank_02.html";
+var testURL_03 = chromeRoot + "browser_english_title.html";
+var testURL_04 = chromeRoot + "browser_no_title.html";
 var pngURL = "data:image/gif;base64,R0lGODlhCwALAIAAAAAA3pn/ZiH5BAEAAAEALAAAAAALAAsAAAIUhA+hkcuO4lmNVindo7qyrIXiGBYAOw==";
 
 // A queue to order the tests and a handle for each test
diff --git a/mobile/chrome/tests/browser_select.js b/mobile/chrome/tests/browser_select.js
index eca47f8013d1..07ab3201ce48 100644
--- a/mobile/chrome/tests/browser_select.js
+++ b/mobile/chrome/tests/browser_select.js
@@ -1,4 +1,4 @@
-let testURL = "chrome://mochikit/content/browser/mobile/chrome/browser_select.html";
+let testURL = chromeRoot + "browser_select.html";
 let new_tab = null;
 
 //------------------------------------------------------------------------------
diff --git a/mobile/chrome/tests/browser_sessionstore.js b/mobile/chrome/tests/browser_sessionstore.js
index 39deae32878e..a55cacc568ce 100644
--- a/mobile/chrome/tests/browser_sessionstore.js
+++ b/mobile/chrome/tests/browser_sessionstore.js
@@ -1,4 +1,4 @@
-var testURL = "chrome://mochikit/content/browser/mobile/chrome/browser_blank_01.html";
+var testURL = chromeRoot + "browser_blank_01.html";
 
 // A queue to order the tests and a handle for each test
 var gTests = [];
diff --git a/mobile/chrome/tests/browser_tabs.js b/mobile/chrome/tests/browser_tabs.js
index 09ec251f1279..a2661de5237d 100755
--- a/mobile/chrome/tests/browser_tabs.js
+++ b/mobile/chrome/tests/browser_tabs.js
@@ -1,6 +1,6 @@
-let testURL_01 = "chrome://mochikit/content/browser/mobile/chrome/browser_blank_01.html";
-let testURL_02 = "chrome://mochikit/content/browser/mobile/chrome/browser_blank_02.html";
-let testURL_03 = "chrome://mochikit/content/browser/mobile/chrome/browser_blank_01.html#tab3";
+let testURL_01 = chromeRoot + "browser_blank_01.html";
+let testURL_02 = chromeRoot + "browser_blank_02.html";
+let testURL_03 = chromeRoot + "browser_blank_01.html#tab3";
 
 let new_tab_01;
 let new_tab_02;
diff --git a/mobile/chrome/tests/browser_tapping.js b/mobile/chrome/tests/browser_tapping.js
index 1432bc3784bc..5fd9fb870d28 100644
--- a/mobile/chrome/tests/browser_tapping.js
+++ b/mobile/chrome/tests/browser_tapping.js
@@ -3,7 +3,7 @@
  *   single tap, double tap & long tap
  */
 
-let testURL = "chrome://mochikit/content/browser/mobile/chrome/browser_tap_content.html";
+let testURL = chromeRoot + "browser_tap_content.html";
 
 let gTests = [];
 let gCurrentTest = null;
diff --git a/mobile/chrome/tests/browser_viewport.js b/mobile/chrome/tests/browser_viewport.js
index c705e2ea11d8..78fa351dc293 100644
--- a/mobile/chrome/tests/browser_viewport.js
+++ b/mobile/chrome/tests/browser_viewport.js
@@ -38,10 +38,9 @@
  *
  * ***** END LICENSE BLOCK ***** */
 
-
-let testURL_blank = "chrome://mochikit/content/browser/mobile/chrome/browser_blank_01.html";
+let testURL_blank = chromeRoot + "browser_blank_01.html";
 let testURL = function testURL(n) {
-  return "chrome://mochikit/content/browser/mobile/chrome/browser_viewport_" +
+  return chromeRoot + "browser_viewport_" +
          (n<10 ? "0" : "") + n + ".html";
 }
 
diff --git a/mobile/chrome/tests/head.js b/mobile/chrome/tests/head.js
index 18d9505aab43..5b009e8409de 100644
--- a/mobile/chrome/tests/head.js
+++ b/mobile/chrome/tests/head.js
@@ -67,5 +67,6 @@ let AsyncTests = {
   }
 };
 
-messageManager.loadFrameScript("chrome://mochikit/content/browser/mobile/chrome/remote_head.js", true);
+let chromeRoot = getRootDirectory(gTestPath);
+messageManager.loadFrameScript(chromeRoot + "remote_head.js", true);
 messageManager.loadFrameScript("chrome://mochikit/content/tests/SimpleTest/EventUtils.js", true);