Migrate WTF::Vector::append() to ::push_back() [part 7 of N]

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 60 matching lines @@
   HeapVector<Member<TextTrack>> currentlyEnabledTracks;
   TextTrack* trackToEnable = nullptr;
   TextTrack* defaultTrack = nullptr;
   TextTrack* preferredTrack = nullptr;
   TextTrack* fallbackTrack = nullptr;
   int highestTrackScore = 0;
 
   for (const auto& textTrack : group.tracks) {
     if (m_configuration.disableCurrentlyEnabledTracks &&
         textTrack->mode() == TextTrack::showingKeyword())
-      currentlyEnabledTracks.append(textTrack);
+      currentlyEnabledTracks.push_back(textTrack);
 
     int trackScore = textTrackSelectionScore(*textTrack);
 
     if (textTrack->kind() == preferredTrackKind())
       trackScore += 1;
     if (trackScore) {
       // * If the text track kind is subtitles or captions and the user has
       // indicated an interest in having a track with this text track kind, text
       // track language, and text track label enabled, and there is no other
       // text track in the media element's list of text tracks with a text track
@@ skipping 98 matching lines @@
     // adding another track after the initial configuration doesn't reconfigure
     // every track - only those that should be changed by the new addition. For
     // example all metadata tracks are disabled by default, and we don't want a
     // track that has been enabled by script to be disabled automatically when a
     // new metadata track is added later.
     if (textTrack->hasBeenConfigured())
       continue;
 
     if (textTrack->language().length())
       currentGroup->hasSrcLang = true;
-    currentGroup->tracks.append(textTrack);
+    currentGroup->tracks.push_back(textTrack);
   }
 
   if (captionAndSubtitleTracks.tracks.size())
     performAutomaticTextTrackSelection(captionAndSubtitleTracks);
   if (descriptionTracks.tracks.size())
     performAutomaticTextTrackSelection(descriptionTracks);
   if (chapterTracks.tracks.size())
     performAutomaticTextTrackSelection(chapterTracks);
   if (metadataTracks.tracks.size())
     enableDefaultMetadataTextTracks(metadataTracks);
 }
 
 }  // namespace blink