Mark HTMLMediaElement media tracks functionality as stable

third_party/WebKit/Source/core/html/HTMLMediaElement.cpp

 /*
  * Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 2378 matching lines @@
 void HTMLMediaElement::togglePlayState()
 {
     if (paused())
         play();
     else
         pause();
 }
 
 AudioTrackList& HTMLMediaElement::audioTracks()
 {
-    DCHECK(RuntimeEnabledFeatures::audioVideoTracksEnabled());
     return *m_audioTracks;
 }
 
 void HTMLMediaElement::audioTrackChanged(WebMediaPlayer::TrackId trackId, bool enabled)
 {
     BLINK_MEDIA_LOG << "audioTrackChanged(" << (void*)this << ") trackId= " << String(trackId) << " enabled=" << boolString(enabled);
-    DCHECK(RuntimeEnabledFeatures::audioVideoTracksEnabled());
 
     audioTracks().scheduleChangeEvent();
 
     // FIXME: Add call on m_mediaSource to notify it of track changes once the SourceBuffer.audioTracks attribute is added.
 
     if (!m_audioTracksTimer.isActive())
         m_audioTracksTimer.startOneShot(0, BLINK_FROM_HERE);
 }
 
 void HTMLMediaElement::audioTracksTimerFired(TimerBase*)
 {
     Vector<WebMediaPlayer::TrackId> enabledTrackIds;
     for (unsigned i = 0; i < audioTracks().length(); ++i) {
         AudioTrack* track = audioTracks().anonymousIndexedGetter(i);
         if (track->enabled())
             enabledTrackIds.append(track->id());
     }
 
     webMediaPlayer()->enabledAudioTracksChanged(enabledTrackIds);
 }
 
 WebMediaPlayer::TrackId HTMLMediaElement::addAudioTrack(const WebString& id, WebMediaPlayerClient::AudioTrackKind kind, const WebString& label, const WebString& language, bool enabled)
 {
     AtomicString kindString = AudioKindToString(kind);
     BLINK_MEDIA_LOG << "addAudioTrack(" << (void*)this << ", '" << (String)id << "', ' " << (AtomicString)kindString
         << "', '" << (String)label << "', '" << (String)language << "', " << boolString(enabled) << ")";
 
-    if (!RuntimeEnabledFeatures::audioVideoTracksEnabled())
-        return blink::WebMediaPlayer::TrackId();
-
     AudioTrack* audioTrack = AudioTrack::create(id, kindString, label, language, enabled);
     audioTracks().add(audioTrack);
 
     return audioTrack->id();
 }
 
 void HTMLMediaElement::removeAudioTrack(WebMediaPlayer::TrackId trackId)
 {
     BLINK_MEDIA_LOG << "removeAudioTrack(" << (void*)this << ")";
 
-    if (!RuntimeEnabledFeatures::audioVideoTracksEnabled())
-        return;
-
     audioTracks().remove(trackId);
 }
 
 VideoTrackList& HTMLMediaElement::videoTracks()
 {
-    DCHECK(RuntimeEnabledFeatures::audioVideoTracksEnabled());
     return *m_videoTracks;
 }
 
 void HTMLMediaElement::selectedVideoTrackChanged(WebMediaPlayer::TrackId* selectedTrackId)
 {
     BLINK_MEDIA_LOG << "selectedVideoTrackChanged(" << (void*)this << ") selectedTrackId=" << (selectedTrackId ? String(*selectedTrackId) : "none");
-    DCHECK(RuntimeEnabledFeatures::audioVideoTracksEnabled());
 
     if (selectedTrackId)
         videoTracks().trackSelected(*selectedTrackId);
 
     // FIXME: Add call on m_mediaSource to notify it of track changes once the SourceBuffer.videoTracks attribute is added.
 
     webMediaPlayer()->selectedVideoTrackChanged(selectedTrackId);
 }
 
 WebMediaPlayer::TrackId HTMLMediaElement::addVideoTrack(const WebString& id, WebMediaPlayerClient::VideoTrackKind kind, const WebString& label, const WebString& language, bool selected)
 {
     AtomicString kindString = VideoKindToString(kind);
     BLINK_MEDIA_LOG << "addVideoTrack(" << (void*)this << ", '" << (String)id << "', '" << (AtomicString)kindString
         << "', '" << (String)label << "', '" << (String)language << "', " << boolString(selected) << ")";
 
-    if (!RuntimeEnabledFeatures::audioVideoTracksEnabled())
-        return blink::WebMediaPlayer::TrackId();
-
     // If another track was selected (potentially by the user), leave it selected.
     if (selected && videoTracks().selectedIndex() != -1)
         selected = false;
 
     VideoTrack* videoTrack = VideoTrack::create(id, kindString, label, language, selected);
     videoTracks().add(videoTrack);
 
     return videoTrack->id();
 }
 
 void HTMLMediaElement::removeVideoTrack(WebMediaPlayer::TrackId trackId)
 {
     BLINK_MEDIA_LOG << "removeVideoTrack(" << (void*)this << ")";
 
-    if (!RuntimeEnabledFeatures::audioVideoTracksEnabled())
-        return;
-
     videoTracks().remove(trackId);
 }
 
 void HTMLMediaElement::addTextTrack(WebInbandTextTrack* webTrack)
 {
     // 4.8.10.12.2 Sourcing in-band text tracks
     // 1. Associate the relevant data with a new text track and its corresponding new TextTrack object.
     InbandTextTrack* textTrack = InbandTextTrack::create(webTrack);
 
     // 2. Set the new text track's kind, label, and language based on the semantics of the relevant data,
@@ skipping 1168 matching lines @@
 DEFINE_TRACE_WRAPPERS(HTMLMediaElement)
 {
     visitor->traceWrappers(m_videoTracks);
     visitor->traceWrappers(m_audioTracks);
     visitor->traceWrappers(m_textTracks);
     HTMLElement::traceWrappers(visitor);
 }
 
 void HTMLMediaElement::createPlaceholderTracksIfNecessary()
 {
-    if (!RuntimeEnabledFeatures::audioVideoTracksEnabled())
-        return;
-
     // Create a placeholder audio track if the player says it has audio but it didn't explicitly announce the tracks.
     if (hasAudio() && !audioTracks().length())
         addAudioTrack("audio", WebMediaPlayerClient::AudioTrackKindMain, "Audio Track", "", true);
 
     // Create a placeholder video track if the player says it has video but it didn't explicitly announce the tracks.
     if (hasVideo() && !videoTracks().length())
         addVideoTrack("video", WebMediaPlayerClient::VideoTrackKindMain, "Video Track", "", true);
 }
 
 void HTMLMediaElement::selectInitialTracksIfNecessary()
 {
-    if (!RuntimeEnabledFeatures::audioVideoTracksEnabled())
-        return;
-
     // Enable the first audio track if an audio track hasn't been enabled yet.
     if (audioTracks().length() > 0 && !audioTracks().hasEnabledTrack())
         audioTracks().anonymousIndexedGetter(0)->setEnabled(true);
 
     // Select the first video track if a video track hasn't been selected yet.
     if (videoTracks().length() > 0 && videoTracks().selectedIndex() == -1)
         videoTracks().anonymousIndexedGetter(0)->setSelected(true);
 }
 
 bool HTMLMediaElement::isLockedPendingUserGesture() const
@@ skipping 300 matching lines @@
 
 IntRect HTMLMediaElement::AutoplayHelperClientImpl::absoluteBoundingBoxRect() const
 {
     IntRect result;
     if (LayoutObject* object = m_element->layoutObject())
         result = object->absoluteBoundingBoxRect();
     return result;
 }
 
 } // namespace blink