https://bugs.webkit.org/show_bug.cgi?id=107046

Reviewed by Sam Weinig.

* CMakeLists.txt: Add new files.
* GNUmakefile.list.am: Ditto.
* Target.pri: Ditto.
* WebCore.gypi: Ditto.
* WebCore.vcproj/WebCore.vcproj: Ditto.
* WebCore.xcodeproj/project.pbxproj: Ditto.

* html/shadow/MediaControlElements.cpp:
(WebCore::MediaControlTextTrackContainerElement::updateDisplay): Pass video size to getDisplayTree.

* html/track/InbandTextTrack.cpp:
(WebCore::InbandTextTrack::addGenericCue): New, create a generic cue if it doesn't already exist.
(WebCore::InbandTextTrack::addWebVTTCue): Renamed from addCue.
* html/track/InbandTextTrack.h:

* html/track/TextTrack.cpp:
(WebCore::TextTrack::hasCue): Moved from InbandTextTrack.cpp, use operator == instead of inline
    comparison so derived TextTrackCues can be compared.
* html/track/TextTrack.h:

* html/track/TextTrackCue.cpp:
(WebCore::TextTrackCueBox::applyCSSProperties): Interface change.
(WebCore::TextTrackCue::TextTrackCue): Don't create the display tree in the constructor, it may
    never be needed.
(WebCore::TextTrackCue::createDisplayTree): New, create the display tree.
(WebCore::TextTrackCue::displayTreeInternal): Display tree accessor, allows it to be created lazily.
(WebCore::TextTrackCue::setAlign): Alignment -> CueAlignment.
(WebCore::TextTrackCue::setIsActive): Use displayTreeInternal().
(WebCore::TextTrackCue::getDisplayTree): Use displayTreeInternal(), pass video size to applyCSSProperties.
(WebCore::TextTrackCue::removeDisplayTree): Use displayTreeInternal().
(WebCore::TextTrackCue::operator==): New.
* html/track/TextTrackCue.h:
(WebCore::TextTrackCue::getAlignment): Alignment -> CueAlignment.
(WebCore::TextTrackCue::operator!=): New.
(WebCore::TextTrackCue::cueType): New, cue type identified needed by operator==.
(WebCore::TextTrackCue::ownerDocument): New.

* html/track/TextTrackCueGeneric.cpp: Added.
(WebCore::TextTrackCueGenericBox::create):
(WebCore::TextTrackCueGenericBox::TextTrackCueGenericBox):
(WebCore::TextTrackCueGenericBox::applyCSSProperties):
(WebCore:::TextTrackCue):
(WebCore::TextTrackCueGeneric::createDisplayTree):
(WebCore::TextTrackCueGeneric::operator==):
* html/track/TextTrackCueGeneric.h: Added.
(WebCore::TextTrackCueGeneric::create):
(WebCore::TextTrackCueGeneric::~TextTrackCueGeneric):
(WebCore::TextTrackCueGeneric::baseFontSizeRelativeToVideoHeight):
(WebCore::TextTrackCueGeneric::setBaseFontSizeRelativeToVideoHeight):
(WebCore::TextTrackCueGeneric::fontSizeMultiplier):
(WebCore::TextTrackCueGeneric::setFontSizeMultiplier):
(WebCore::TextTrackCueGeneric::fontName):
(WebCore::TextTrackCueGeneric::setFontName):
(WebCore::TextTrackCueGeneric::operator!=):
(WebCore::TextTrackCueGeneric::cueType):

* platform/graphics/InbandTextTrackPrivateClient.h:
* platform/graphics/avfoundation/InbandTextTrackPrivateAVF.cpp:
(WebCore::InbandTextTrackPrivateAVF::processCueAttributes): Copy cue attributes into GenericCueData
    struct instead of trying to convert to WebVTT settings string. Process font size,font base
    size, font name, and vertical layout attributes,
(WebCore::InbandTextTrackPrivateAVF::processCue): Create separate cues for each attributed
    string in the array because each one can be at a different screen location.
(WebCore::InbandTextTrackPrivateAVF::resetCueValues):
* platform/graphics/avfoundation/InbandTextTrackPrivateAVF.h:
(InbandTextTrackPrivateAVF):

* platform/graphics/avfoundation/MediaPlayerPrivateAVFoundation.cpp:
(WebCore::MediaPlayerPrivateAVFoundation::seekCompleted): Reset any partially accumulated cues
    delivered since the seek was started.
(WebCore::MediaPlayerPrivateAVFoundation::addGenericCue): Renamed from flushCurrentCue.
* platform/graphics/avfoundation/MediaPlayerPrivateAVFoundation.h:

* platform/graphics/avfoundation/objc/MediaPlayerPrivateAVFoundationObjC.mm:
(WebCore::MediaPlayerPrivateAVFoundationObjC::createAVPlayer): Whitespace cleanup.
(WebCore::MediaPlayerPrivateAVFoundationObjC::createAVPlayerItem): Ditto.
(WebCore::MediaPlayerPrivateAVFoundationObjC::tracksChanged): Tell legible output to deliver cues
    without any additional styling needed by the internal renderer.
(WebCore::MediaPlayerPrivateAVFoundationObjC::processTextTracks):
(WebCore::MediaPlayerPrivateAVFoundationObjC::setCurrentTrack): Do nothing if asked to change
    to the track that is already current.
(-[WebCoreAVFMovieObserver legibleOutput:didOutputAttributedStrings:nativeSampleBuffers:forItemTime:]):
    Check to make sure that the client callback isn't NULL.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@140359 268f45cc-cd09-0410-ab3c-d52691b4dbfc