Make SkColorSpace a public API

src/core/SkColorSpace.cpp

Index: src/core/SkColorSpace.cpp
diff --git a/src/core/SkColorSpace.cpp b/src/core/SkColorSpace.cpp
index 59013fe7cb0be04cad45c7194ffab0ea1741c8f9..a85ed83a2d8e1f7adf0f9e1b733c449d1040ded8 100644
--- a/src/core/SkColorSpace.cpp
+++ b/src/core/SkColorSpace.cpp
@@ -5,7 +5,6 @@
  * found in the LICENSE file.
  */
 
-#include "SkAtomics.h"
 #include "SkColorSpace.h"
 #include "SkColorSpacePriv.h"
 #include "SkOnce.h"
@@ -16,12 +15,9 @@ static bool color_space_almost_equal(float a, float b) {
 
 //////////////////////////////////////////////////////////////////////////////////////////////////
 
-static int32_t gUniqueColorSpaceID;
-
 SkColorSpace::SkColorSpace(sk_sp<SkGammas> gammas, const SkMatrix44& toXYZD50, Named named)
     : fGammas(gammas)
     , fToXYZD50(toXYZD50)
-    , fUniqueID(sk_atomic_inc(&gUniqueColorSpaceID))
     , fNamed(named)
 {}
 
@@ -30,7 +26,6 @@ SkColorSpace::SkColorSpace(SkColorLookUpTable* colorLUT, sk_sp<SkGammas> gammas,
     : fColorLUT(colorLUT)
     , fGammas(gammas)
     , fToXYZD50(toXYZD50)
-    , fUniqueID(sk_atomic_inc(&gUniqueColorSpaceID))
     , fNamed(kUnknown_Named)
 {}