Removing blink::prefix

Source/core/html/track/TrackListBase.h

Index: Source/core/html/track/TrackListBase.h
diff --git a/Source/core/html/track/TrackListBase.h b/Source/core/html/track/TrackListBase.h
index 247e96e7daca5059fd2727d2daf4dfbc1c1bcfe6..8ea75f0dd2bddc5712ae712b5bf872379d1544b0 100644
--- a/Source/core/html/track/TrackListBase.h
+++ b/Source/core/html/track/TrackListBase.h
@@ -77,7 +77,7 @@ public:
         scheduleTrackEvent(EventTypeNames::addtrack, track.release());
     }
 
-    void remove(blink::WebMediaPlayer::TrackId trackId)
+    void remove(WebMediaPlayer::TrackId trackId)
     {
         for (unsigned i = 0; i < m_tracks.size(); ++i) {
             if (m_tracks[i]->trackId() != trackId)
@@ -127,6 +127,6 @@ private:
     RawPtrWillBeMember<HTMLMediaElement> m_mediaElement;
 };
 
-}
+} // namespace blink
 
 #endif