No need to store invalid media queries.

Source/core/css/MediaQuery.h

Index: Source/core/css/MediaQuery.h
diff --git a/Source/core/css/MediaQuery.h b/Source/core/css/MediaQuery.h
index 13653a09505c7ff3c8e3ea2b5508c6a9c73f8500..2ff81846cf82c62ebb1b08bf7f9761811f9cc1c1 100644
--- a/Source/core/css/MediaQuery.h
+++ b/Source/core/css/MediaQuery.h
@@ -54,7 +54,6 @@ public:
     String mediaType() const { return m_mediaType; }
     bool operator==(const MediaQuery& other) const;
     String cssText() const;
-    bool ignored() const { return m_ignored; }
 
     PassOwnPtr<MediaQuery> copy() const { return adoptPtr(new MediaQuery(*this)); }
 
@@ -66,7 +65,6 @@ private:
     Restrictor m_restrictor;
     String m_mediaType;
     OwnPtr<ExpressionVector> m_expressions;
-    bool m_ignored;
     String m_serializationCache;
 
     String serialize() const;