Implement color-gamut media query

third_party/WebKit/Source/platform/graphics/ColorSpace.h

Index: third_party/WebKit/Source/platform/graphics/ColorSpace.h
diff --git a/third_party/WebKit/Source/platform/graphics/ColorSpace.h b/third_party/WebKit/Source/platform/graphics/ColorSpace.h
index 43570f17570f26dd847d41c914eeb19fac259a22..9672626345748a65fc934a59436c1c5f63c581ab 100644
--- a/third_party/WebKit/Source/platform/graphics/ColorSpace.h
+++ b/third_party/WebKit/Source/platform/graphics/ColorSpace.h
@@ -31,11 +31,30 @@
 #include "third_party/skia/include/core/SkRefCnt.h"
 
 class SkColorFilter;
+class SkColorSpace;
 
 namespace blink {
 
+struct WebScreenInfo;
+
 enum ColorSpace { ColorSpaceDeviceRGB, ColorSpaceSRGB, ColorSpaceLinearRGB };
 
+enum class ColorSpaceGamut {
+  // Values synced with 'Gamut' in src/tools/metrics/histograms/histograms.xml
+  Unknown = 0,
+  LessThanNTSC = 1,
+  NTSC = 2,
+  SRGB = 3,
+  AlmostP3 = 4,
+  P3 = 5,
+  AdobeRGB = 6,
+  Wide = 7,
+  BT2020 = 8,
+  ProPhoto = 9,
+  UltraWide = 10,
+  End
+};
+
 namespace ColorSpaceUtilities {
 
 // Get a pointer to a 8-bit lookup table that will convert color components
@@ -57,6 +76,9 @@ Color convertColor(const Color& srcColor,
 sk_sp<SkColorFilter> createColorSpaceFilter(ColorSpace srcColorSpace,
                                             ColorSpace dstColorSpace);
 
+PLATFORM_EXPORT ColorSpaceGamut getColorSpaceGamut(const WebScreenInfo&);
+ColorSpaceGamut getColorSpaceGamut(SkColorSpace*);
+
 }  // namespace ColorSpaceUtilities
 
 }  // namespace blink