Bug 1213095 - Enable chaos mode on a couple of APZ tests. r=botond

--HG--
extra : commitid : KiwuGCX8npA

gfx/layers/apz/test/mochitest/test_scroll_inactive_bug1190112.html

@@ -536,6 +536,7 @@ window.onload = function() {
   });
 }
 
+SimpleTest.testInChaosMode();
 SimpleTest.waitForExplicitFinish();
 </script>
 </body>

gfx/layers/apz/test/mochitest/test_scroll_inactive_flattened_frame.html

@@ -44,6 +44,7 @@ window.onload = function() {
   });
 }
 
+SimpleTest.testInChaosMode();
 SimpleTest.waitForExplicitFinish();
 </script>
 </body>