bug 975782 stop delaying the load event when media fetch has stalled r=cpearce,f=kinetik

dom/html/HTMLMediaElement.cpp

@@ -3111,11 +3111,16 @@ void HTMLMediaElement::CheckProgress(bool aHaveNewProgress)
                    "timer dispatched when there was no timer");
       // Were stalled.  Restart timer.
       StartProgressTimer();
+      if (!mLoadedDataFired) {
+        ChangeDelayLoadStatus(true);
+      }
     }
   }
 
   if (now - mDataTime >= TimeDuration::FromMilliseconds(STALL_MS)) {
     DispatchAsyncEvent(NS_LITERAL_STRING("stalled"));
+    ChangeDelayLoadStatus(false);
+
     NS_ASSERTION(mProgressTimer, "detected stalled without timer");
     // Stop timer events, which prevents repeated stalled events until there
     // is more progress.