Add support for new CSS ::slotted() pseudo element

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

 /*
  * Copyright (C) 2008, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 157 matching lines @@
         return selector.relationIsAffectedByPseudoContent();
     }
 };
 
 bool CSSSelectorList::selectorHasShadowDistributed(size_t index) const
 {
     SelectorHasShadowDistributed functor;
     return forEachTagSelector(functor, selectorAt(index));
 }
 
+class SelectorHasShadowSlotted {
+public:
+    bool operator()(const CSSSelector& selector)
+    {
+        return selector.relationIsAffectedByPseudoSlotted();
+    }
+};
+
+bool CSSSelectorList::selectorHasShadowSlotted(size_t index) const
+{
+    SelectorHasShadowSlotted functor;
+    return forEachTagSelector(functor, selectorAt(index));
+}
+
 class SelectorUsesDeepCombinatorOrShadowPseudo {
 public:
     bool operator()(const CSSSelector& selector)
     {
         return selector.relation() == CSSSelector::ShadowDeep || selector.pseudoType() == CSSSelector::PseudoShadow;
     }
 };
 
 bool CSSSelectorList::selectorUsesDeepCombinatorOrShadowPseudo(size_t index) const
 {
     SelectorUsesDeepCombinatorOrShadowPseudo functor;
     return forEachTagSelector(functor, selectorAt(index));
 }
 
 class SelectorNeedsUpdatedDistribution {
 public:
     bool operator()(const CSSSelector& selector)
     {
-        return selector.relationIsAffectedByPseudoContent() || selector.pseudoType() == CSSSelector::PseudoHostContext;
+        return selector.relationIsAffectedByPseudoContent() || selector.pseudoType() == CSSSelector::PseudoHostContext || selector.pseudoType() == CSSSelector::PseudoSlotted;
     }
 };
 
 bool CSSSelectorList::selectorNeedsUpdatedDistribution(size_t index) const
 {
     SelectorNeedsUpdatedDistribution functor;
     return forEachTagSelector(functor, selectorAt(index));
 }
 
 } // namespace blink