Remove the index of in-band tracks on the Chromium side

media/blink/webinbandtexttrack_impl.cc

Index: media/blink/webinbandtexttrack_impl.cc
diff --git a/media/blink/webinbandtexttrack_impl.cc b/media/blink/webinbandtexttrack_impl.cc
index 49a4880a4d7868f26d92fa87208dcf1fd8de3a4a..720cd43f6e9dc09f5ed907be4f406d6c76b85bc6 100644
--- a/media/blink/webinbandtexttrack_impl.cc
+++ b/media/blink/webinbandtexttrack_impl.cc
@@ -12,14 +12,12 @@ WebInbandTextTrackImpl::WebInbandTextTrackImpl(
     Kind kind,
     const blink::WebString& label,
     const blink::WebString& language,
-    const blink::WebString& id,
-    int index)
+    const blink::WebString& id)
     : client_(NULL),
       kind_(kind),
       label_(label),
       language_(language),
-      id_(id),
-      index_(index) {
+      id_(id) {
 }
 
 WebInbandTextTrackImpl::~WebInbandTextTrackImpl() {
@@ -51,8 +49,4 @@ blink::WebString WebInbandTextTrackImpl::id() const {
   return id_;
 }
 
-int WebInbandTextTrackImpl::textTrackIndex() const {
-  return index_;
-}
-
 }  // namespace media