Bug 1262406 - P1. Track element doesn't use the URL classifier. r=francois

MozReview-Commit-ID: 1YJgcRrrwqj

--HG--
extra : transplant_source : j%07U%CF%25%C7T%9D%85%FD%7B%99%DE%C7%D8%ADVm6%CB

dom/html/HTMLTrackElement.cpp

@@ -214,7 +214,9 @@ HTMLTrackElement::LoadResource()
                      static_cast<Element*>(this),
                      nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_DATA_INHERITS,
                      nsIContentPolicy::TYPE_INTERNAL_TRACK,
-                     loadGroup);
+                     loadGroup,
+                     nullptr,   // aCallbacks
+                     nsIRequest::LOAD_NORMAL | nsIChannel::LOAD_CLASSIFY_URI);
 
   NS_ENSURE_TRUE_VOID(NS_SUCCEEDED(rv));