3 files changed, 11 insertions, 14 deletions
diff --git a/services/sync/tps/extensions/mozmill/resource/modules/assertions.js b/services/sync/tps/extensions/mozmill/resource/modules/assertions.js
index c76f95747..b49502057 100644
--- a/services/sync/tps/extensions/mozmill/resource/modules/assertions.js
+++ b/services/sync/tps/extensions/mozmill/resource/modules/assertions.js
@@ -4,7 +4,7 @@
 
 var EXPORTED_SYMBOLS = ['Assert', 'Expect'];
 
-var Cu = Components.utils;
+const Cu = Components.utils;
 
 Cu.import("resource://gre/modules/Services.jsm");
 
@@ -658,10 +658,7 @@ Expect.prototype.waitFor = function Expect_waitFor(aCallback, aMessage, aTimeout
   try {
     Assert.prototype.waitFor.apply(this, arguments);
   }
-  catch (ex) {
-    if (!(ex instanceof errors.AssertionError)) {
-      throw ex;
-    }
+  catch (ex if ex instanceof errors.AssertionError) {
     message = ex.message;
     condition = false;
   }
diff --git a/services/sync/tps/extensions/mozmill/resource/modules/frame.js b/services/sync/tps/extensions/mozmill/resource/modules/frame.js
index dae8276b6..799e81d55 100644
--- a/services/sync/tps/extensions/mozmill/resource/modules/frame.js
+++ b/services/sync/tps/extensions/mozmill/resource/modules/frame.js
@@ -5,9 +5,9 @@
 var EXPORTED_SYMBOLS = ['Collector','Runner','events', 'runTestFile', 'log',
                         'timers', 'persisted', 'shutdownApplication'];
 
-var Cc = Components.classes;
-var Ci = Components.interfaces;
-var Cu = Components.utils;
+const Cc = Components.classes;
+const Ci = Components.interfaces;
+const Cu = Components.utils;
 
 const TIMEOUT_SHUTDOWN_HTTPD = 15000;
 
@@ -256,7 +256,7 @@ events.pass = function (obj) {
     events.currentTest.__passes__.push(obj);
   }
 
-  for (var timer of timers) {
+  for each (var timer in timers) {
     timer.actions.push(
       {"currentTest": events.currentModule.__file__ + "::" + events.currentTest.__name__,
        "obj": obj,
@@ -286,7 +286,7 @@ events.fail = function (obj) {
     events.currentTest.__fails__.push(obj);
   }
 
-  for (var time of timers) {
+  for each (var time in timers) {
     timer.actions.push(
       {"currentTest": events.currentModule.__file__ + "::" + events.currentTest.__name__,
        "obj": obj,
@@ -325,7 +325,7 @@ events.fireEvent = function (name, obj) {
     }
   }
 
-  for (var listener of this.globalListeners) {
+  for each(var listener in this.globalListeners) {
     listener(name, obj);
   }
 }
diff --git a/services/sync/tps/extensions/mozmill/resource/modules/windows.js b/services/sync/tps/extensions/mozmill/resource/modules/windows.js
index 1c75a2d3d..fe9cfaa01 100644
--- a/services/sync/tps/extensions/mozmill/resource/modules/windows.js
+++ b/services/sync/tps/extensions/mozmill/resource/modules/windows.js
@@ -4,9 +4,9 @@
 
 var EXPORTED_SYMBOLS = ["init", "map"];
 
-var Cc = Components.classes;
-var Ci = Components.interfaces;
-var Cu = Components.utils;
+const Cc = Components.classes;
+const Ci = Components.interfaces;
+const Cu = Components.utils;
 
 // imports
 var utils = {}; Cu.import('resource://mozmill/stdlib/utils.js', utils);