Rename addTrack and removeTrack functions to addTextTrack and removeTextTrack.

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 2c687bb2bd08bc7b5f3c446a021af514e6d5879a..5fd4855161676c979405d28d49cd910fcfe8115f 100644
--- a/Source/core/html/HTMLMediaElement.h
+++ b/Source/core/html/HTMLMediaElement.h
@@ -187,8 +187,8 @@ public:
     TextTrackList* textTracks();
     CueList currentlyActiveCues() const { return m_currentlyActiveCues; }
 
-    void addTrack(TextTrack*);
-    void removeTrack(TextTrack*);
+    void addTextTrack(PassRefPtr<TextTrack>);
+    void removeTextTrack(TextTrack*);
     void removeAllInbandTracks();
     void closeCaptionTracksChanged();
     void notifyMediaPlayerOfTextTrackChanges();
@@ -196,8 +196,8 @@ public:
     void didAddTrack(HTMLTrackElement*);
     void didRemoveTrack(HTMLTrackElement*);
 
-    virtual void mediaPlayerDidAddTrack(blink::WebInbandTextTrack*) OVERRIDE FINAL;
-    virtual void mediaPlayerDidRemoveTrack(blink::WebInbandTextTrack*) OVERRIDE FINAL;
+    virtual void mediaPlayerDidAddTextTrack(blink::WebInbandTextTrack*) OVERRIDE FINAL;
+    virtual void mediaPlayerDidRemoveTextTrack(blink::WebInbandTextTrack*) OVERRIDE FINAL;
 
     struct TrackGroup {
         enum GroupKind { CaptionsAndSubtitles, Description, Chapter, Metadata, Other };