2 files changed, 16 insertions, 4 deletions
diff --git a/layout/reftests/transform-3d/animate-backface-hidden.html b/layout/reftests/transform-3d/animate-backface-hidden.html
index ce957bf73..27b587006 100644
--- a/layout/reftests/transform-3d/animate-backface-hidden.html
+++ b/layout/reftests/transform-3d/animate-backface-hidden.html
@@ -17,7 +17,7 @@ body { padding: 50px }
   height: 200px; width: 200px;
   backface-visibility: hidden;
   /* use a -99.9s delay to start at 99.9% and then move to 0% */
-  animation: flip 100s -99.9s linear 2;
+  animation: flip 100s -99.9s linear 2 paused;
 }
 
 </style>
@@ -27,7 +27,13 @@ body { padding: 50px }
 
 <script>
 
-document.getElementById("test").addEventListener("animationiteration", IterationListener, false);
+document.getElementById("test").addEventListener("animationstart", StartListener, false);
+
+function StartListener(event) {
+  var test = document.getElementById("test");
+  test.style.animationPlayState = 'running';
+  test.addEventListener("animationiteration", IterationListener, false);
+}
 
 function IterationListener(event) {
   setTimeout(RemoveReftestWait, 0);
diff --git a/layout/reftests/transform-3d/animate-preserve3d-parent.html b/layout/reftests/transform-3d/animate-preserve3d-parent.html
index ae3fec196..d05beac6f 100644
--- a/layout/reftests/transform-3d/animate-preserve3d-parent.html
+++ b/layout/reftests/transform-3d/animate-preserve3d-parent.html
@@ -18,7 +18,7 @@ body { padding: 50px }
   border: 1px solid black;
   transform-style: preserve-3d;
   /* use a -99.9s delay to start at 99.9% and then move to 0% */
-  animation: spin 100s -99.9s linear 2;
+  animation: spin 100s -99.9s linear 2 paused;
 }
 
 #child {
@@ -39,7 +39,13 @@ body { padding: 50px }
 
 <script>
 
-document.getElementById("parent").addEventListener("animationiteration", IterationListener, false);
+document.getElementById("parent").addEventListener("animationstart", StartListener, false);
+
+function StartListener(event) {
+  var test = document.getElementById("parent");
+  test.style.animationPlayState = 'running';
+  test.addEventListener("animationiteration", IterationListener, false);
+}
 
 function IterationListener(event) {
   setTimeout(RemoveReftestWait, 0);