Revert of Implement /content/ combinator.

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 1903 matching lines @@
     QualifiedName tag(namespacePrefix, elementName, determinedNamespace);
 
     if (CSSParserSelector* distributedPseudoElementSelector = specifiers->findDistributedPseudoElementSelector()) {
         specifiers->prependTagSelector(tag, tagIsForNamespaceRule);
         return rewriteSpecifiersForShadowDistributed(specifiers, distributedPseudoElementSelector);
     }
 
     if (specifiers->needsCrossingTreeScopeBoundary())
         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)
@@ skipping 22 matching lines @@
     lastShadowPseudo->setRelation(CSSSelector::ShadowPseudo);
     return specifiers;
 }
 
 CSSParserSelector* BisonCSSParser::rewriteSpecifiersWithElementNameForContentPseudoElement(const QualifiedName& tag, const AtomicString& elementName, CSSParserSelector* specifiers, bool tagIsForNamespaceRule)
 {
     CSSParserSelector* last = specifiers;
     CSSParserSelector* history = specifiers;
     while (history->tagHistory()) {
         history = history->tagHistory();
-        if (history->relationIsAffectedByPseudoContent())
+        if (history->isContentPseudoElement() || history->relationIsAffectedByPseudoContent())
             last = history;
     }
 
     if (last->tagHistory()) {
         if (tag != anyQName())
             last->tagHistory()->prependTagSelector(tag, tagIsForNamespaceRule);
         return specifiers;
     }
 
     // For shadow-ID pseudo-elements to be correctly matched, the ShadowPseudo combinator has to be used.
@@ skipping 32 matching lines @@
     }
 }
 
 CSSParserSelector* BisonCSSParser::rewriteSpecifiers(CSSParserSelector* specifiers, CSSParserSelector* newSpecifier)
 {
     if (newSpecifier->needsCrossingTreeScopeBoundary()) {
         // 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()) {
         // 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;
 }
 
 StyleRuleBase* BisonCSSParser::createPageRule(PassOwnPtr<CSSParserSelector> pageSelector)
 {
     // FIXME: Margin at-rules are ignored.
     m_allowImportRules = m_allowNamespaceDeclarations = false;
     StyleRulePage* pageRule = 0;
     if (pageSelector) {
@@ skipping 160 matching lines @@
     rule->setProperties(createStylePropertySet());
     clearProperties();
 
     StyleRuleViewport* result = rule.get();
     m_parsedRules.append(rule.release());
 
     return result;
 }
 
 }