Remove the :-webkit-full-screen-document pseudo class

Source/core/css/SelectorChecker.cpp

Index: Source/core/css/SelectorChecker.cpp
diff --git a/Source/core/css/SelectorChecker.cpp b/Source/core/css/SelectorChecker.cpp
index b470c0b3c2e670d91dcd92933e6e11c9a15f4fd7..d711fb9b52329d73c29794d06908c5ceb468f098 100644
--- a/Source/core/css/SelectorChecker.cpp
+++ b/Source/core/css/SelectorChecker.cpp
@@ -934,10 +934,6 @@ bool SelectorChecker::checkPseudoClass(const SelectorCheckingContext& context, M
         return Fullscreen::isActiveFullScreenElement(element);
     case CSSSelector::PseudoFullScreenAncestor:
         return element.containsFullScreenElement();
-    case CSSSelector::PseudoFullScreenDocument:
-        // While a Document is in the fullscreen state, the 'full-screen-document' pseudoclass applies
-        // to all elements of that Document.
-        return Fullscreen::isFullScreen(element.document());
     case CSSSelector::PseudoInRange:
         if (m_mode == ResolvingStyle)
             element.document().setContainsValidityStyleRules();