https://bugs.webkit.org/show_bug.cgi?id=94395

Reviewed by Eric Carlson.

This patch will create a button that toggles any captions or subtitles on or off.

Source/WebCore:

Test: media/video-controls-captions.html

* css/mediaControlsChromium.css:
(audio::-webkit-media-controls-toggle-closed-captions-button, video::-webkit-media-controls-toggle-closed-captions-button):
New style for new button.

* html/HTMLMediaElement.cpp:
(WebCore::HTMLMediaElement::HTMLMediaElement):
Initialize new variable for keeping track of user (button) disabled captions.

(WebCore::HTMLMediaElement::loadTimerFired):
Rename configureNewTextTracks() to configureTextTracks().

(WebCore::HTMLMediaElement::prepareForLoad):
Do not set closedCaptionsVisible to false, we should instead honor the
checks for default out-of-band tracks.

(WebCore::HTMLMediaElement::textTrackModeChanged):
Rename configureNewTextTracks() to configureTextTracks().

(WebCore::HTMLMediaElement::userIsInterestedInThisTrackKind):
Add checks for when user has requested to see or not see captions.

(WebCore::HTMLMediaElement::configureTextTracks):
Rename configureNewTextTracks() to configureTextTracks().

(WebCore::HTMLMediaElement::hasClosedCaptions):
Return true if we have any caption or subtitle text tracks.

(WebCore::HTMLMediaElement::setClosedCaptionsVisible):
Update the text track display and the closed captions button when the
closed captions button is toggled.

(WebCore::HTMLMediaElement::configureTextTrackDisplay):
If the visibility of any text tracks has changed, update the display and
the controls.

(WebCore::HTMLMediaElement::updateClosedCaptionsControls):
New function that updates both the text track display and the closed
captions button.

* html/HTMLMediaElement.h:
(HTMLMediaElement):
New function updateClosedCaptionsControls()

Adding the button:
* html/shadow/MediaControlRootElementChromium.cpp:
(WebCore::MediaControlRootElementChromium::MediaControlRootElementChromium):
(WebCore::MediaControlRootElementChromium::initializeControls):
(WebCore::MediaControlRootElementChromium::setMediaController):
(WebCore::MediaControlRootElementChromium::reset):
(WebCore::MediaControlRootElementChromium::reportedError):
(WebCore::MediaControlRootElementChromium::changedClosedCaptionsVisibility):
(WebCore::MediaControlRootElementChromium::createTextTrackDisplay):
* html/shadow/MediaControlRootElementChromium.h:
(WebCore):
(MediaControlRootElementChromium):

Ensure that Linux and Windows render themes will support closed captions:
* rendering/RenderThemeChromiumSkia.cpp:
(WebCore):
(WebCore::supportsClosedCaptioning):
* rendering/RenderThemeChromiumSkia.h:
(RenderThemeChromiumSkia):

LayoutTests:

* media/video-controls-captions-expected.txt: Added.
* media/video-controls-captions.html: Added.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@127035 268f45cc-cd09-0410-ab3c-d52691b4dbfc