Bug 1334112 - part2: When changing the readyState to HAVE_FUTURE_DATA and HAVE_ENOUGH_DATA, the texttracks must be loaded. r=jwwang

MozReview-Commit-ID: I7oA3TleAFo

--HG--
extra : rebase_source : 4a77aa7d6e8cfd366327dd10a03ad5c228c925c0

dom/html/HTMLMediaElement.cpp

@@ -5611,6 +5611,14 @@ HTMLMediaElement::UpdateReadyStateInternal()
     return;
   }
 
+  // TextTracks must be loaded for the HAVE_ENOUGH_DATA and
+  // HAVE_FUTURE_DATA.
+  // So force HAVE_CURRENT_DATA if text tracks not loaded.
+  if (mTextTrackManager && !mTextTrackManager->IsLoaded()) {
+    ChangeReadyState(nsIDOMHTMLMediaElement::HAVE_CURRENT_DATA);
+    return;
+  }
+
   if (mDownloadSuspendedByCache && mDecoder && !mDecoder->IsEnded()) {
     // The decoder has signaled that the download has been suspended by the
     // media cache. So move readyState into HAVE_ENOUGH_DATA, in case there's