Put unqualified pseudos into the more specific rulesets.

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All
  * rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
@@ skipping 72 matching lines @@
                          LayoutTheme::GetTheme().ExtraDefaultStyleSheet();
   default_style_sheet_ = ParseUASheet(default_rules);
   default_style_->AddRulesFromSheet(DefaultStyleSheet(), ScreenEval());
   default_print_style_->AddRulesFromSheet(DefaultStyleSheet(), PrintEval());
 
   // Quirks-mode rules.
   String quirks_rules = LoadResourceAsASCIIString("quirks.css") +
                         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() {
   if (!default_view_source_style_) {
     default_view_source_style_ = RuleSet::Create();
     // Loaded stylesheet is leaked on purpose.
     StyleSheetContents* stylesheet =
         ParseUASheet(LoadResourceAsASCIIString("view-source.css"));
     default_view_source_style_->AddRulesFromSheet(stylesheet, ScreenEval());
   }
@@ skipping 83 matching lines @@
   visitor->Trace(television_viewport_style_sheet_);
   visitor->Trace(xhtml_mobile_profile_style_sheet_);
   visitor->Trace(quirks_style_sheet_);
   visitor->Trace(svg_style_sheet_);
   visitor->Trace(mathml_style_sheet_);
   visitor->Trace(media_controls_style_sheet_);
   visitor->Trace(fullscreen_style_sheet_);
 }
 
 }  // namespace blink