https://bugs.webkit.org/show_bug.cgi?id=107579

Patch by Dima Gorbik <dgorbik@apple.com> on 2013-01-31
Reviewed by Eric Carlson.

Source/WebCore:

We were using non-standard element names with HTMLElement, which made v8 try to cast
WebVTTElements to HTMLUnknownElements which was not possible. Subclassing Element instead
of HTMLElement, though this requires building HTMLElements from WebVTTElements for creating
a DOM tree. The code has been refactored to move WebVTT node type to QuialifiedName mappings
inside the WebVTTElement class. All WebVTTElements in the shadow dom tree now are in the
namespace defined by 'NullAtom'. This prevents regular styles from being applied to <b>, <i>
and similar tags. Those have to be styled separately without reusing existing QualifiedNames
and their styles. https://bugs.webkit.org/show_bug.cgi?id=107214

Unskipping tests to cover this.

* css/SelectorChecker.cpp:
(WebCore::SelectorChecker::checkOne):
* css/StyleResolver.cpp:
(WebCore::StyleResolver::collectMatchingRules):
(WebCore::StyleResolver::canShareStyleWithElement):
* html/track/TextTrackCue.cpp:
(WebCore::TextTrackCue::copyWebVTTNodeToDOMTree):
(WebCore::TextTrackCue::getCueAsHTML):
(WebCore::TextTrackCue::createCueRenderingTree):
(WebCore::TextTrackCue::markFutureAndPastNodes):
* html/track/TextTrackCue.h:
(WebCore::TextTrackCue::cueShadowPseudoId):
* html/track/WebVTTElement.cpp:
(WebCore::nodeTypeToTagName): get a QualifiedName to use in the shadow DOM tree.
(WebCore::WebVTTElement::WebVTTElement):
(WebCore::WebVTTElement::create):
(WebCore::WebVTTElement::cloneElementWithoutAttributesAndChildren):
(WebCore::WebVTTElement::createEquivalentHTMLElement): create an HTMLElement to use in the DOM tree.
* html/track/WebVTTElement.h:
(WebCore::WebVTTElement::setWebVTTNodeType):
(WebCore::WebVTTElement::webVTTNodeType):
(WebCore::WebVTTElement::isPastNode):
(WebCore::WebVTTElement::setIsPastNode):
(WebCore::WebVTTElement::voiceAttributeName):
* html/track/WebVTTParser.cpp:
(WebCore::tokenToNodeType): determine a WebVTT node type for the token.
(WebCore::WebVTTParser::constructTreeFromToken):

LayoutTests:

* platform/chromium/TestExpectations:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@141529 268f45cc-cd09-0410-ab3c-d52691b4dbfc