Remove the use of :-webkit-full-screen-document.

Source/core/css/parser/BisonCSSParser-in.cpp

Index: Source/core/css/parser/BisonCSSParser-in.cpp
diff --git a/Source/core/css/parser/BisonCSSParser-in.cpp b/Source/core/css/parser/BisonCSSParser-in.cpp
index 9cc86dc57ce4b89fd88b80f2909b98ebf57ca055..e61a1623c37bc0fb5c45903265ce170057c69046 100644
--- a/Source/core/css/parser/BisonCSSParser-in.cpp
+++ b/Source/core/css/parser/BisonCSSParser-in.cpp
@@ -821,6 +821,15 @@ static void recordSelectorStats(const CSSParserContext& context, const CSSSelect
             case CSSSelector::PseudoHostContext:
                 feature = UseCounter::CSSSelectorPseudoHostContext;
                 break;
+            case CSSSelector::PseudoFullScreenDocument:
+                feature = UseCounter::CSSSelectorPseudoFullScreenDocument;
+                break;
+            case CSSSelector::PseudoFullScreenAncestor:
+                feature = UseCounter::CSSSelectorPseudoFullScreenAncestor;
+                break;
+            case CSSSelector::PseudoFullScreen:
+                feature = UseCounter::CSSSelectorPseudoFullScreen;
+                break;
             default:
                 break;
             }