Put unqualified pseudos into the more specific rulesets.

third_party/WebKit/Source/core/css/CSSDefaultStyleSheets.cpp

Index: third_party/WebKit/Source/core/css/CSSDefaultStyleSheets.cpp
diff --git a/third_party/WebKit/Source/core/css/CSSDefaultStyleSheets.cpp b/third_party/WebKit/Source/core/css/CSSDefaultStyleSheets.cpp
index e0ba8808823dd7593278ea1f9251d9ef90c2bfbb..694cc60067788cecb8cd8781cc5f824b148c7e3d 100644
--- a/third_party/WebKit/Source/core/css/CSSDefaultStyleSheets.cpp
+++ b/third_party/WebKit/Source/core/css/CSSDefaultStyleSheets.cpp
@@ -90,6 +90,15 @@ CSSDefaultStyleSheets::CSSDefaultStyleSheets() {
                         LayoutTheme::GetTheme().ExtraQuirksStyleSheet();
   quirks_style_sheet_ = ParseUASheet(quirks_rules);
   default_quirks_style_->AddRulesFromSheet(QuirksStyleSheet(), ScreenEval());
+
+#if DCHECK_IS_ON()
+  default_style_->CompactRulesIfNeeded();
+  default_print_style_->CompactRulesIfNeeded();
+  default_quirks_style_->CompactRulesIfNeeded();
+  DCHECK(default_style_->UniversalRules()->IsEmpty());
+  DCHECK(default_print_style_->UniversalRules()->IsEmpty());
+  DCHECK(default_quirks_style_->UniversalRules()->IsEmpty());
+#endif
 }
 
 RuleSet* CSSDefaultStyleSheets::DefaultViewSourceStyle() {