Add TextTrack::isVisualKind helper

third_party/WebKit/Source/core/html/track/AutomaticTrackSelection.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/html/track/AutomaticTrackSelection.h"
 
 #include "core/html/track/TextTrack.h"
 #include "core/html/track/TextTrackList.h"
 #include "platform/Language.h"
 
@@ skipping 32 matching lines @@
     Vector<AtomicString> languages = userPreferredLanguages();
     size_t languageMatchIndex = indexOfBestMatchingLanguageInList(track.language(), languages);
     if (languageMatchIndex >= languages.size())
         return 0;
 
     return languages.size() - languageMatchIndex;
 }
 
 static int textTrackSelectionScore(const TextTrack& track)
 {
-    if (track.kind() != TextTrack::captionsKeyword() && track.kind() != TextTrack::subtitlesKeyword())
+    if (!track.isVisualKind())
         return 0;
 
     return textTrackLanguageSelectionScore(track);
 }
 
 AutomaticTrackSelection::AutomaticTrackSelection(const Configuration& configuration)
     : m_configuration(configuration)
 {
 }
 
@@ skipping 143 matching lines @@
         performAutomaticTextTrackSelection(captionAndSubtitleTracks);
     if (descriptionTracks.tracks.size())
         performAutomaticTextTrackSelection(descriptionTracks);
     if (chapterTracks.tracks.size())
         performAutomaticTextTrackSelection(chapterTracks);
     if (metadataTracks.tracks.size())
         enableDefaultMetadataTextTracks(metadataTracks);
 }
 
 } // namespace blink