Enable support for CSS Conditional Rules

Source/core/css/CSSParser.cpp

Index: Source/core/css/CSSParser.cpp
diff --git a/Source/core/css/CSSParser.cpp b/Source/core/css/CSSParser.cpp
index 222b1fb68f531f4494c25aa91bef52b474b825be..16f7e659202a74466b565a81fb63cb8e227bf72f 100644
--- a/Source/core/css/CSSParser.cpp
+++ b/Source/core/css/CSSParser.cpp
@@ -290,9 +290,7 @@ CSSParser::CSSParser(const CSSParserContext& context)
     , m_important(false)
     , m_id(CSSPropertyInvalid)
     , m_styleSheet(0)
-#if ENABLE(CSS3_CONDITIONAL_RULES)
     , m_supportsCondition(false)
-#endif
     , m_selectorListForParseSelector(0)
     , m_numParsedPropertiesBeforeMarginBox(INVALID_NUM_PARSED_PROPERTIES)
     , m_inParseShorthand(0)
@@ -468,7 +466,6 @@ PassRefPtr<StyleKeyframe> CSSParser::parseKeyframeRule(StyleSheetContents* sheet
     return m_keyframe.release();
 }
 
-#if ENABLE(CSS3_CONDITIONAL_RULES)
 bool CSSParser::parseSupportsCondition(const String& string)
 {
     m_supportsCondition = false;
@@ -476,7 +473,6 @@ bool CSSParser::parseSupportsCondition(const String& string)
     cssyyparse(this);
     return m_supportsCondition;
 }
-#endif
 
 static inline bool isColorPropertyID(CSSPropertyID propertyId)
 {
@@ -10191,14 +10187,12 @@ inline void CSSParser::detectAtToken(int length, bool hasEscape)
         }
         return;
 
-#if ENABLE(CSS3_CONDITIONAL_RULES)
     case 's':
         if (length == 9 && isEqualToCSSIdentifier(name + 2, "upports")) {
             m_parsingMode = SupportsMode;
             m_token = SUPPORTS_SYM;
         }
         return;
-#endif
 
     case 't':
         if (hasEscape)
@@ -10299,18 +10293,15 @@ inline void CSSParser::detectAtToken(int length, bool hasEscape)
             return;
 
         case 27:
-#if ENABLE(CSS3_CONDITIONAL_RULES)
             if (isEqualToCSSIdentifier(name + 2, "webkit-supports-condition")) {
                 m_parsingMode = SupportsMode;
                 m_token = WEBKIT_SUPPORTS_CONDITION_SYM;
             }
-#endif
             return;
         }
     }
 }
 
-#if ENABLE(CSS3_CONDITIONAL_RULES)
 template <typename CharacterType>
 inline void CSSParser::detectSupportsToken(int length)
 {
@@ -10327,7 +10318,6 @@ inline void CSSParser::detectSupportsToken(int length)
             m_token = SUPPORTS_NOT;
     }
 }
-#endif
 
 template <typename SrcCharacterType>
 int CSSParser::realLex(void* yylvalWithoutType)
@@ -10368,13 +10358,12 @@ restartAfterComment:
         m_token = IDENT;
 
         if (UNLIKELY(*currentCharacter<SrcCharacterType>() == '(')) {
-#if ENABLE(CSS3_CONDITIONAL_RULES)
             if (m_parsingMode == SupportsMode && !hasEscape) {
                 detectSupportsToken<SrcCharacterType>(result - tokenStart<SrcCharacterType>());
                 if (m_token != IDENT)
                     break;
             }
-#endif
+
             m_token = FUNCTION;
             bool shouldSkipParenthesis = true;
             if (!hasEscape) {
@@ -10404,10 +10393,8 @@ restartAfterComment:
         } else if (UNLIKELY(m_parsingMode != NormalMode) && !hasEscape) {
             if (m_parsingMode == MediaQueryMode)
                 detectMediaQueryToken<SrcCharacterType>(result - tokenStart<SrcCharacterType>());
-#if ENABLE(CSS3_CONDITIONAL_RULES)
             else if (m_parsingMode == SupportsMode)
                 detectSupportsToken<SrcCharacterType>(result - tokenStart<SrcCharacterType>());
-#endif
             else if (m_parsingMode == NthChildMode && isASCIIAlphaCaselessEqual(tokenStart<SrcCharacterType>()[0], 'n')) {
                 if (result - tokenStart<SrcCharacterType>() == 1) {
                     // String "n" is IDENT but "n+1" is NTH.
@@ -10909,7 +10896,6 @@ StyleRuleBase* CSSParser::createMediaRule(MediaQuerySet* media, RuleList* rules)
     return result;
 }
 
-#if ENABLE(CSS3_CONDITIONAL_RULES)
 StyleRuleBase* CSSParser::createSupportsRule(bool conditionIsSupported, RuleList* rules)
 {
     m_allowImportRules = m_allowNamespaceDeclarations = false;
@@ -10967,8 +10953,6 @@ PassRefPtr<CSSRuleSourceData> CSSParser::popSupportsRuleData()
     return data.release();
 }
 
-#endif
-
 CSSParser::RuleList* CSSParser::createRuleList()
 {
     OwnPtr<RuleList> list = adoptPtr(new RuleList);