Enable flattening and unflattening of SkColorSpace

include/core/SkColorSpace.h

Index: include/core/SkColorSpace.h
diff --git a/include/core/SkColorSpace.h b/include/core/SkColorSpace.h
index ea3e6726b2079fe7d582c7368cc2e2df69bb43f2..5cdb1468fa0b05f67d38c690acccc6745dd875ef 100644
--- a/include/core/SkColorSpace.h
+++ b/include/core/SkColorSpace.h
@@ -11,6 +11,8 @@
 #include "SkMatrix44.h"
 #include "SkRefCnt.h"
 
+class SkData;
+
 class SK_API SkColorSpace : public SkRefCnt {
 public:
 
@@ -75,11 +77,15 @@ public:
         return kSRGB_GammaNamed == fGammaNamed || k2Dot2Curve_GammaNamed == fGammaNamed;
     }
 
-protected:
+    /**
+     *  Caller takes ownership of SkData.
+     */
+    sk_sp<SkData> serialize() const;
 
-    SkColorSpace(GammaNamed gammaNamed, const SkMatrix44& toXYZD50, Named named);
+    static sk_sp<SkColorSpace> Deserialize(const void* data, size_t length);
 
-    friend Named sk_deduce_named_from_colorspace(SkColorSpace*);
+protected:
+    SkColorSpace(GammaNamed gammaNamed, const SkMatrix44& toXYZD50, Named named);
 
     const GammaNamed fGammaNamed;
     const SkMatrix44 fToXYZD50;