Back out b0303f19d6fe (bug 886168) for turning on failing tests

CLOSED TREE

testing/mochitest/b2g.json

@@ -9,8 +9,7 @@
 "excludetests": {
     "content/xbl/":"",
     "content/xul":"",
-    "content/media/test":"",
+    "content/media/":"",
-    "content/media/webspeech":"",
 
     "dom/imptests/editing/selecttest/test_addRange.html": "oom?, bug 775227",
     "dom/imptests/webapps/DOMCore/tests/approved/test_Range-insertNode.html":"oom?, bug 775227",