Implement color-gamut media query

third_party/WebKit/Source/core/css/MediaQueryExp.cpp

 /*
  * CSS Media Query
  *
  * Copyright (C) 2006 Kimmo Kinnunen <kimmo.t.kinnunen@nokia.com>.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  * Copyright (C) 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
@@ skipping 47 matching lines @@
     return ident == CSSValueNone || ident == CSSValueOnDemand ||
            ident == CSSValueHover;
 
   if (mediaFeature == scanMediaFeature)
     return ident == CSSValueInterlace || ident == CSSValueProgressive;
 
   if (RuntimeEnabledFeatures::mediaQueryShapeEnabled()) {
     if (mediaFeature == shapeMediaFeature)
       return ident == CSSValueRect || ident == CSSValueRound;
   }
+
+  if (mediaFeature == colorGamutMediaFeature) {
+    return ident == CSSValueSRGB || ident == CSSValueP3 ||
+           ident == CSSValueRec2020;
+  }
+
   return false;
 }
 
 static inline bool featureWithValidPositiveLength(const String& mediaFeature,
                                                   const CSSParserToken& token) {
   if (!(CSSPrimitiveValue::isLength(token.unitType()) ||
         (token.type() == NumberToken && token.numericValue() == 0)) ||
       token.numericValue() < 0)
     return false;
 
@@ skipping 83 matching lines @@
          mediaFeature == aspectRatioMediaFeature ||
          mediaFeature == deviceAspectRatioMediaFeature ||
          mediaFeature == hoverMediaFeature ||
          mediaFeature == anyHoverMediaFeature ||
          mediaFeature == transform3dMediaFeature ||
          mediaFeature == pointerMediaFeature ||
          mediaFeature == anyPointerMediaFeature ||
          mediaFeature == devicePixelRatioMediaFeature ||
          mediaFeature == resolutionMediaFeature ||
          mediaFeature == displayModeMediaFeature ||
-         mediaFeature == scanMediaFeature || mediaFeature == shapeMediaFeature;
+         mediaFeature == scanMediaFeature ||
+         mediaFeature == shapeMediaFeature ||
+         mediaFeature == colorGamutMediaFeature;
 }
 
 bool MediaQueryExp::isViewportDependent() const {
   return m_mediaFeature == widthMediaFeature ||
          m_mediaFeature == heightMediaFeature ||
          m_mediaFeature == minWidthMediaFeature ||
          m_mediaFeature == minHeightMediaFeature ||
          m_mediaFeature == maxWidthMediaFeature ||
          m_mediaFeature == maxHeightMediaFeature ||
          m_mediaFeature == orientationMediaFeature ||
@@ skipping 135 matching lines @@
     output.append('/');
     output.append(printNumber(denominator));
   } else if (isID) {
     output.append(getValueName(id));
   }
 
   return output.toString();
 }
 
 }  // namespace blink