Implement ::shadow pseudo element and replace /shadow/ with ::shadow.

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

 /*
  * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
  * Copyright (C) 2012 Intel Corporation. All rights reserved.
  *
@@ skipping 1881 matching lines @@
 
 QualifiedName BisonCSSParser::determineNameInNamespace(const AtomicString& prefix, const AtomicString& localName)
 {
     if (!m_styleSheet)
         return QualifiedName(prefix, localName, m_defaultNamespace);
     return QualifiedName(prefix, localName, m_styleSheet->determineNamespace(prefix));
 }
 
 CSSParserSelector* BisonCSSParser::rewriteSpecifiersWithNamespaceIfNeeded(CSSParserSelector* specifiers)
 {
-    if (m_defaultNamespace != starAtom || specifiers->needsCrossingTreeScopeBoundary())
+    if (m_defaultNamespace != starAtom || specifiers->crossesTreeScopes())
         return rewriteSpecifiersWithElementName(nullAtom, starAtom, specifiers, /*tagIsForNamespaceRule*/true);
     return specifiers;
 }
 
 CSSParserSelector* BisonCSSParser::rewriteSpecifiersWithElementName(const AtomicString& namespacePrefix, const AtomicString& elementName, CSSParserSelector* specifiers, bool tagIsForNamespaceRule)
 {
     AtomicString determinedNamespace = namespacePrefix != nullAtom && m_styleSheet ? m_styleSheet->determineNamespace(namespacePrefix) : m_defaultNamespace;
     QualifiedName tag(namespacePrefix, elementName, determinedNamespace);
 
-    if (specifiers->needsCrossingTreeScopeBoundary())
+    if (specifiers->crossesTreeScopes())
         return rewriteSpecifiersWithElementNameForCustomPseudoElement(tag, elementName, specifiers, tagIsForNamespaceRule);
 
     if (specifiers->isContentPseudoElement())
         return rewriteSpecifiersWithElementNameForContentPseudoElement(tag, elementName, specifiers, tagIsForNamespaceRule);
 
     // *:host never matches, so we can't discard the * otherwise we can't tell the
     // difference between *:host and just :host.
     if (tag == anyQName() && !specifiers->hasHostPseudoSelector())
         return specifiers;
     if (specifiers->pseudoType() != CSSSelector::PseudoCue)
         specifiers->prependTagSelector(tag, tagIsForNamespaceRule);
     return specifiers;
 }
 
 CSSParserSelector* BisonCSSParser::rewriteSpecifiersWithElementNameForCustomPseudoElement(const QualifiedName& tag, const AtomicString& elementName, CSSParserSelector* specifiers, bool tagIsForNamespaceRule)
 {
     if (m_context.useCounter() && specifiers->pseudoType() == CSSSelector::PseudoUserAgentCustomElement)
         m_context.useCounter()->count(UseCounter::CSSPseudoElementUserAgentCustomPseudo);
 
     CSSParserSelector* lastShadowPseudo = specifiers;
     CSSParserSelector* history = specifiers;
     while (history->tagHistory()) {
         history = history->tagHistory();
-        if (history->needsCrossingTreeScopeBoundary() || history->hasShadowPseudo())
+        if (history->crossesTreeScopes() || history->hasShadowPseudo())
             lastShadowPseudo = history;
     }
 
     if (lastShadowPseudo->tagHistory()) {
         if (tag != anyQName())
             lastShadowPseudo->tagHistory()->prependTagSelector(tag, tagIsForNamespaceRule);
         return specifiers;
     }
 
     // For shadow-ID pseudo-elements to be correctly matched, the ShadowPseudo combinator has to be used.
@@ skipping 23 matching lines @@
     // For shadow-ID pseudo-elements to be correctly matched, the ShadowPseudo combinator has to be used.
     // We therefore create a new Selector with that combinator here in any case, even if matching any (host) element in any namespace (i.e. '*').
     OwnPtr<CSSParserSelector> elementNameSelector = adoptPtr(new CSSParserSelector(tag));
     last->setTagHistory(elementNameSelector.release());
     last->setRelation(CSSSelector::SubSelector);
     return specifiers;
 }
 
 CSSParserSelector* BisonCSSParser::rewriteSpecifiers(CSSParserSelector* specifiers, CSSParserSelector* newSpecifier)
 {
-    if (newSpecifier->needsCrossingTreeScopeBoundary()) {
+    if (newSpecifier->crossesTreeScopes()) {
         // Unknown pseudo element always goes at the top of selector chain.
         newSpecifier->appendTagHistory(CSSSelector::ShadowPseudo, sinkFloatingSelector(specifiers));
         return newSpecifier;
     }
     if (newSpecifier->isContentPseudoElement()) {
         newSpecifier->appendTagHistory(CSSSelector::SubSelector, sinkFloatingSelector(specifiers));
         return newSpecifier;
     }
-    if (specifiers->needsCrossingTreeScopeBoundary()) {
+    if (specifiers->crossesTreeScopes()) {
         // Specifiers for unknown pseudo element go right behind it in the chain.
         specifiers->insertTagHistory(CSSSelector::SubSelector, sinkFloatingSelector(newSpecifier), CSSSelector::ShadowPseudo);
         return specifiers;
     }
     if (specifiers->isContentPseudoElement()) {
         specifiers->insertTagHistory(CSSSelector::SubSelector, sinkFloatingSelector(newSpecifier), CSSSelector::SubSelector);
         return specifiers;
     }
     specifiers->appendTagHistory(CSSSelector::SubSelector, sinkFloatingSelector(newSpecifier));
     return specifiers;
@@ skipping 168 matching lines @@
     rule->setProperties(createStylePropertySet());
     clearProperties();
 
     StyleRuleViewport* result = rule.get();
     m_parsedRules.append(rule.release());
 
     return result;
 }
 
 }