Improved parse error handling for CSSMQ.

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 2b2efe3abf69f8396bbd09ab6fe62bf22de85e99..4fbcf74fdc80e402882492fbebbd6265b18705e8 100644
--- a/Source/core/css/CSSParser.cpp
+++ b/Source/core/css/CSSParser.cpp
@@ -1363,7 +1363,7 @@ PassOwnPtr<MediaQuery> CSSParser::parseMediaQuery(const String& string)
     ASSERT(!m_mediaQuery);
 
     // can't use { because tokenizer state switches from mediaquery to initial state when it sees { token.
-    // instead insert one " " (which is WHITESPACE in CSSGrammar.y)
+    // instead insert one " " (which is caught by maybe_space in CSSGrammar.y)
     setupParser("@-webkit-mediaquery ", string, "} ");
     cssyyparse(this);
 
@@ -10326,7 +10326,8 @@ restartAfterComment:
                     // ... and(max-width: 480px) ... looks like a function, but in fact it is not,
                     // so run more detection code in the MediaQueryMode.
                     detectMediaQueryToken<SrcCharacterType>(result - tokenStart<SrcCharacterType>());
-                    shouldSkipParenthesis = false;
+                    if (m_token == MEDIA_AND)
+                        shouldSkipParenthesis = false;
                 }
             }
 
@@ -10798,6 +10799,11 @@ MediaQuery* CSSParser::createFloatingMediaQuery(PassOwnPtr<Vector<OwnPtr<MediaQu
     return createFloatingMediaQuery(MediaQuery::None, "all", expressions);
 }
 
+MediaQuery* CSSParser::createFloatingNotAllQuery()
+{
+    return createFloatingMediaQuery(MediaQuery::Not, "all", sinkFloatingMediaQueryExpList(createFloatingMediaQueryExpList()));
+}
+
 PassOwnPtr<MediaQuery> CSSParser::sinkFloatingMediaQuery(MediaQuery* query)
 {
     ASSERT_UNUSED(query, query == m_floatingMediaQuery);