Introduce :-internal-shadow-host-has-appearance pseudo class, and apply it to METER element.

third_party/WebKit/Source/core/css/RuleFeature.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/)
  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
@@ skipping 125 matching lines @@
     case CSSSelector::PseudoStart:
     case CSSSelector::PseudoEnd:
     case CSSSelector::PseudoDoubleButton:
     case CSSSelector::PseudoSingleButton:
     case CSSSelector::PseudoNoButton:
     case CSSSelector::PseudoFullScreen:
     case CSSSelector::PseudoFullScreenAncestor:
     case CSSSelector::PseudoInRange:
     case CSSSelector::PseudoOutOfRange:
     case CSSSelector::PseudoWebKitCustomElement:
+    case CSSSelector::PseudoBlinkInternalElement:
     case CSSSelector::PseudoCue:
     case CSSSelector::PseudoFutureCue:
     case CSSSelector::PseudoPastCue:
     case CSSSelector::PseudoUnresolved:
     case CSSSelector::PseudoContent:
     case CSSSelector::PseudoHost:
     case CSSSelector::PseudoShadow:
     case CSSSelector::PseudoSpatialNavigationFocus:
     case CSSSelector::PseudoListBox:
+    case CSSSelector::PseudoHostHasAppearance:
     case CSSSelector::PseudoSlotted:
         return true;
     case CSSSelector::PseudoUnknown:
     case CSSSelector::PseudoLeftPage:
     case CSSSelector::PseudoRightPage:
     case CSSSelector::PseudoFirstPage:
         // These should not appear in StyleRule selectors.
         ASSERT_NOT_REACHED();
         return false;
     default:
@@ skipping 124 matching lines @@
         return true;
     }
     if (selector.match() == CSSSelector::Class) {
         features.classes.append(selector.value());
         return true;
     }
     if (selector.isAttributeSelector()) {
         features.attributes.append(selector.attribute().localName());
         return true;
     }
-    if (selector.getPseudoType() == CSSSelector::PseudoWebKitCustomElement) {
+    if (selector.getPseudoType() == CSSSelector::PseudoWebKitCustomElement || selector.getPseudoType() == CSSSelector::PseudoBlinkInternalElement) {
         features.customPseudoElement = true;
         return true;
     }
     if (selector.getPseudoType() == CSSSelector::PseudoBefore || selector.getPseudoType() == CSSSelector::PseudoAfter)
         features.hasBeforeOrAfter = true;
     return false;
 }
 
 InvalidationSet* RuleFeatureSet::invalidationSetForSelector(const CSSSelector& selector, InvalidationType type)
 {
@@ skipping 470 matching lines @@
     }
 }
 
 DEFINE_TRACE(RuleFeatureSet)
 {
     visitor->trace(siblingRules);
     visitor->trace(uncommonAttributeRules);
 }
 
 } // namespace blink