[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 fdfe564875fdf819d858c7eee7cdd65012d790cd..1506e0b8597bcbafdf9504b89fc80ef2b730c9e3 100644
--- a/Source/core/css/MediaQueryExp.cpp
+++ b/Source/core/css/MediaQueryExp.cpp
@@ -89,6 +89,7 @@ static inline bool featureWithPositiveInteger(const AtomicString& mediaFeature,
         || mediaFeature == MediaFeatureNames::colorIndexMediaFeature
         || mediaFeature == MediaFeatureNames::maxColorIndexMediaFeature
         || mediaFeature == MediaFeatureNames::minColorIndexMediaFeature
+        || mediaFeature == MediaFeatureNames::monochromeMediaFeature
         || mediaFeature == MediaFeatureNames::minMonochromeMediaFeature
         || mediaFeature == MediaFeatureNames::maxMonochromeMediaFeature;
 }