In-band captions not visible immediately after track mode change
https://bugs.webkit.org/show_bug.cgi?id=115922

Reviewed by Dean Jackson.

Source/WebCore: 

Test: media/track/track-in-band-mode.html

* html/HTMLMediaElement.cpp:
(WebCore::HTMLMediaElement::textTrackModeChanged): Add cues for all loaded tracks, regardless
    of track type.

LayoutTests: 

* media/track/track-in-band-mode-expected.txt: Added.
* media/track/track-in-band-mode.html: Added.

* platform/efl/TestExpectations: Skip new test.
* platform/gtk/TestExpectations: Ditto.
* platform/mac/TestExpectations: Ditto.
* platform/qt/TestExpectations: Ditto.
* platform/win/TestExpectations: Ditto.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@149906 268f45cc-cd09-0410-ab3c-d52691b4dbfc