[CSSMQ] Allow integer values for monochrome media feature.

Source/core/css/MediaQueryExp.cpp

Index: Source/core/css/MediaQueryExp.cpp
diff --git a/Source/core/css/MediaQueryExp.cpp b/Source/core/css/MediaQueryExp.cpp
index 711ee9d7a79cb645ed2dc35bbd36da72967f99c6..42584f098d000b4eb9e4f8c153b38398899c3ff5 100644
--- a/Source/core/css/MediaQueryExp.cpp
+++ b/Source/core/css/MediaQueryExp.cpp
@@ -86,6 +86,7 @@ static inline bool featureWithPositiveInteger(const AtomicString& mediaFeature,
     return mediaFeature == MediaFeatureNames::colorMediaFeature
         || mediaFeature == MediaFeatureNames::max_colorMediaFeature
         || mediaFeature == MediaFeatureNames::min_colorMediaFeature
+        || mediaFeature == MediaFeatureNames::monochromeMediaFeature
         || mediaFeature == MediaFeatureNames::min_monochromeMediaFeature
         || mediaFeature == MediaFeatureNames::max_monochromeMediaFeature;
 }