Parse media attributes and CSSOM media text as media_query_list.

Source/core/css/CSSParser.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 1331 matching lines @@
         clearProperties();
     }
 
     if (m_sourceDataHandler)
         m_sourceDataHandler->endRuleBody(string.length(), false);
     m_sourceDataHandler = 0;
 
     return ok;
 }
 
-PassOwnPtr<MediaQuery> CSSParser::parseMediaQuery(const String& string)
+PassRefPtr<MediaQuerySet> CSSParser::parseMediaQueryList(const String& string)
 {
-    if (string.isEmpty())
-        return nullptr;
-
-    ASSERT(!m_mediaQuery);
+    ASSERT(!m_mediaList);
 
     // can't use { because tokenizer state switches from mediaquery to initial state when it sees { token.
     // instead insert one " " (which is caught by maybe_space in CSSGrammar.y)
-    setupParser("@-webkit-mediaquery ", string, "} ");
+    setupParser("@-internal-medialist ", string, "");
     cssyyparse(this);
 
-    return m_mediaQuery.release();
+    ASSERT(m_mediaList.get());
+    return m_mediaList.release();
 }
 
 static inline void filterProperties(bool important, const CSSParser::ParsedPropertyVector& input, Vector<CSSProperty, 256>& output, size_t& unusedEntries, BitArray<numCSSProperties>& seenProperties, HashSet<AtomicString>& seenVariables)
 {
     // Add properties in reverse order so that highest priority definitions are reached first. Duplicate definitions can then be ignored when found.
     for (int i = input.size() - 1; i >= 0; --i) {
         const CSSProperty& property = input[i];
         if (property.isImportant() != important)
             continue;
         if (property.id() == CSSPropertyVariable) {
@@ skipping 8887 matching lines @@
                 m_token = WEBKIT_VIEWPORT_RULE_SYM;
 #endif
             return;
 
         case 18:
             if (isEqualToCSSIdentifier(name + 2, "webkit-keyframes"))
                 m_token = WEBKIT_KEYFRAMES_SYM;
             return;
 
         case 19:
-            if (!hasEscape && isASCIIAlphaCaselessEqual(name[18], 'r') && isEqualToCSSIdentifier(name + 2, "internal-selecto")) {
+            if (!hasEscape && isASCIIAlphaCaselessEqual(name[18], 'r') && isEqualToCSSIdentifier(name + 2, "internal-selecto"))
                 m_token = INTERNAL_SELECTOR_SYM;
-                return;
-            }
+            return;
 
-            if (isEqualToCSSIdentifier(name + 2, "webkit-mediaquery")) {
+        case 20:
+            if (isEqualToCSSIdentifier(name + 2, "internal-medialist")) {
                 m_parsingMode = MediaQueryMode;
-                m_token = WEBKIT_MEDIAQUERY_SYM;
+                m_token = INTERNAL_MEDIALIST_SYM;
             }
             return;
 
         case 22:
             if (!hasEscape && isEqualToCSSIdentifier(name + 2, "webkit-keyframe-rule"))
                 m_token = WEBKIT_KEYFRAME_RULE_SYM;
             return;
 
         case 27:
             if (isEqualToCSSIdentifier(name + 2, "webkit-supports-condition")) {
@@ skipping 1514 matching lines @@
 {
     // The tokenizer checks for the construct of an+b.
     // However, since the {ident} rule precedes the {nth} rule, some of those
     // tokens are identified as string literal. Furthermore we need to accept
     // "odd" and "even" which does not match to an+b.
     return equalIgnoringCase(token, "odd") || equalIgnoringCase(token, "even")
         || equalIgnoringCase(token, "n") || equalIgnoringCase(token, "-n");
 }
 
 }