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..2bc9a332518a972b6e5724649bb18320161e8912 100644
--- a/include/core/SkColorSpace.h
+++ b/include/core/SkColorSpace.h
@@ -9,9 +9,9 @@
 #define SkColorSpace_DEFINED
 
 #include "SkMatrix44.h"
-#include "SkRefCnt.h"
+#include "SkFlattenable.h"
 
-class SK_API SkColorSpace : public SkRefCnt {
+class SK_API SkColorSpace : public SkFlattenable {

[msarett, 2016/06/20 22:41:59]

We can flatten/unflatten without making SkColorSpace an SkFlattenable.  I think
this is fine, but I'm indifferent.  Didn't really want a public CreateProc()...

 public:
 
     /**
@@ -75,11 +75,14 @@ public:
         return kSRGB_GammaNamed == fGammaNamed || k2Dot2Curve_GammaNamed == fGammaNamed;
     }
 
-protected:
+    SK_DEFINE_FLATTENABLE_TYPE(SkColorSpace)
+    static sk_sp<SkFlattenable> CreateProc(SkReadBuffer&);
 
+protected:
     SkColorSpace(GammaNamed gammaNamed, const SkMatrix44& toXYZD50, Named named);
 
-    friend Named sk_deduce_named_from_colorspace(SkColorSpace*);
+    void flatten(SkWriteBuffer&) const override;
+    Factory getFactory() const override { return CreateProc; }
 
     const GammaNamed fGammaNamed;
     const SkMatrix44 fToXYZD50;