Prevent 'removetrack' events from firing when all inband text tracks are removed.

Source/core/html/HTMLMediaElement.h

Index: Source/core/html/HTMLMediaElement.h
diff --git a/Source/core/html/HTMLMediaElement.h b/Source/core/html/HTMLMediaElement.h
index c4df625a816d7280341172d594160b7dc9638965..fedf42c3f4e216b3f02523dbfe0d5b7f74cbf8bc 100644
--- a/Source/core/html/HTMLMediaElement.h
+++ b/Source/core/html/HTMLMediaElement.h
@@ -188,10 +188,12 @@ public:
 
     void addTextTrack(TextTrack*);
     void removeTextTrack(TextTrack*);
-    void removeAllInbandTracks();
     void closeCaptionTracksChanged();
     void notifyMediaPlayerOfTextTrackChanges();
 
+    // Implements the "forget the media element's media-resource-specific tracks" algorithm in the HTML5 spec.
+    void forgetResourceSpecificTracks();
+
     void didAddTrackElement(HTMLTrackElement*);
     void didRemoveTrackElement(HTMLTrackElement*);