Bug 1480213: Give nsMediaFeatures.h an include for nsCSSProps.h, to provide nsCSSKTableEntry type definition & fix non-unified build bustage. r=TYLin

Differential Revision: https://phabricator.services.mozilla.com/D2628

--HG--
extra : moz-landing-system : lando

layout/style/nsMediaFeatures.h

@@ -10,10 +10,10 @@
 #define nsMediaFeatures_h_
 
 #include <stdint.h>
+#include "nsCSSProps.h"
 
 class nsAtom;
 class nsIDocument;
-struct nsCSSKTableEntry;
 class nsCSSValue;
 class nsStaticAtom;