Move text track active list management to CueTimeline

Source/core/html/track/LoadableTextTrack.cpp

Index: Source/core/html/track/LoadableTextTrack.cpp
diff --git a/Source/core/html/track/LoadableTextTrack.cpp b/Source/core/html/track/LoadableTextTrack.cpp
index 84b99fe3b1fdbff2cf99af15399b290d2ad45819..82285a4c61aecb926a17d7975d6c7017b66f6ff5 100644
--- a/Source/core/html/track/LoadableTextTrack.cpp
+++ b/Source/core/html/track/LoadableTextTrack.cpp
@@ -29,6 +29,7 @@
 #include "core/dom/ElementTraversal.h"
 #include "core/html/HTMLMediaElement.h"
 #include "core/html/HTMLTrackElement.h"
+#include "core/html/track/CueTimeline.h"
 #include "core/html/track/TextTrackCueList.h"
 #include "core/html/track/vtt/VTTRegionList.h"
 
@@ -130,8 +131,8 @@ void LoadableTextTrack::newCuesAvailable(TextTrackLoader* loader)
         m_cues->add(newCues[i].release());
     }
 
-    if (mediaElement() && mode() != disabledKeyword())
-        mediaElement()->textTrackAddCues(this, m_cues.get());
+    if (cueTimeline() && mode() != disabledKeyword())
+        cueTimeline()->addCues(this, m_cues.get());
 }
 
 void LoadableTextTrack::cueLoadingCompleted(TextTrackLoader* loader, bool loadingFailed)