Parse media attributes and CSSOM media text as media_query_list.

Source/core/css/CSSGrammar.y.in

Index: Source/core/css/CSSGrammar.y.in
diff --git a/Source/core/css/CSSGrammar.y.in b/Source/core/css/CSSGrammar.y.in
index 008756f09231fa0a51fe087b31269f7845bcee65..31f7fe781f1759860640e80e1b4288f93f8012f0 100644
--- a/Source/core/css/CSSGrammar.y.in
+++ b/Source/core/css/CSSGrammar.y.in
@@ -125,12 +125,12 @@ static inline bool isCSSTokenAString(int yytype)
 %token NAMESPACE_SYM
 %token VARFUNCTION
 %token INTERNAL_DECLS_SYM
+%token INTERNAL_MEDIALIST_SYM
 %token INTERNAL_RULE_SYM
 %token INTERNAL_SELECTOR_SYM
 %token INTERNAL_VALUE_SYM
 %token WEBKIT_KEYFRAME_RULE_SYM
 %token WEBKIT_KEYFRAMES_SYM
-%token WEBKIT_MEDIAQUERY_SYM
 %token WEBKIT_REGION_RULE_SYM
 %token WEBKIT_VIEWPORT_RULE_SYM
 %token WEBKIT_SUPPORTS_CONDITION_SYM
@@ -327,7 +327,7 @@ stylesheet:
   | internal_rule maybe_space
   | internal_selector maybe_space
   | internal_value maybe_space
-  | webkit_mediaquery maybe_space
+  | internal_medialist
   | webkit_keyframe_rule maybe_space
   | webkit_supports_condition maybe_space
   ;
@@ -362,10 +362,10 @@ internal_value:
     }
 ;
 
-webkit_mediaquery:
-     WEBKIT_MEDIAQUERY_SYM maybe_space valid_media_query '}' {
-         parser->m_mediaQuery = parser->sinkFloatingMediaQuery($3);
-     }
+internal_medialist:
+    INTERNAL_MEDIALIST_SYM maybe_space maybe_media_list TOKEN_EOF {
+        parser->m_mediaList = $3;
+    }
 ;
 
 internal_selector: