WebKit merge 40668:40722 part 1.

third_party/WebKit/WebCore/platform/graphics/Color.h

Index: third_party/WebKit/WebCore/platform/graphics/Color.h
===================================================================
--- third_party/WebKit/WebCore/platform/graphics/Color.h	(revision 9310)
+++ third_party/WebKit/WebCore/platform/graphics/Color.h	(working copy)
@@ -60,6 +60,7 @@
 RGBA32 colorWithOverrideAlpha(RGBA32 color, float overrideAlpha);
 RGBA32 makeRGBA32FromFloats(float r, float g, float b, float a);
 RGBA32 makeRGBAFromHSLA(double h, double s, double l, double a);
+RGBA32 makeRGBAFromCMYKA(float c, float m, float y, float k, float a);
 
 int differenceSquared(const Color&, const Color&);
 
@@ -71,6 +72,8 @@
     Color(int r, int g, int b, int a) : m_color(makeRGBA(r, g, b, a)), m_valid(true) { }
     // Color is currently limited to 32bit RGBA, perhaps some day we'll support better colors
     Color(float r, float g, float b, float a) : m_color(makeRGBA32FromFloats(r, g, b, a)), m_valid(true) { }
+    // Creates a new color from the specific CMYK and alpha values.
+    Color(float c, float m, float y, float k, float a) : m_color(makeRGBAFromCMYKA(c, m, y, k, a)), m_valid(true) { }
     explicit Color(const String&);
     explicit Color(const char*);